I have a whale tail on my fish and ski and it does seem to help get on plane on slow speeds. A hydrofoil is a device that reduces the drag on your vessel by elevating the boat in the water as it gathers speed. My boat will actually slow down at full up but pulls the boat out of the water if it's getting thin. but they will slow u down about 2 to 3 mph. If at all possible, remain with the whale at a distance until trained help arrives or another boat takes . A whale tail and slower turns made a big difference. 2008 Snyder custom jet boat with 2008 115/80 Etec Jet 1990 Alumacraft 1448 jon boat with 1997 Mercury 25/20 jet. . 2. Different pitch sizes create different RPM's all through the operating range. It would seem that you get one benefit as a trade off for one deficit. "The most immediate thing we can do to minimize this is slow down," a Sea Legacy spokesperson said. River Rider Posts: 192 Joined: 15 . said, try a whale tail or some other type of "wing" on the cavitation plate of your motor. What is a hydrofoil stabilizer? Outsider said: Porpoising occurs when the lifting moment on the bow ceases to be =/> than the weight to be lifted, the bow falls, lifties take over again, repeat ad nauseam. Also they can make handeling down right dangeroue when taking on waves parallel. For more details on each of these tips, dive deeper below. If you see a spout, tail, or a breaching whale, please slow down and post a lookout. If I drive it aggressively and stay in the throttle it is fine, but that is it, GO or NO, no in between. Creating additional resistance, enough to make the boat slower, means more fuel consumption. If possible, without further stressing the whale, get photos that show the injury and allow the whale to be identified (dorsal and / or tail photos). Remember, all whales are protected by federal law. This is different than the tail . If you have too low of a pitch size prop you will over rev your engine at full speed causing possible damage to the engine. I have been looking into the whale tail for my jet. This structure is mounted under the hull of a boat with struts or on the bottom of the centerboards on catamarans. Mar 21, 2006 #3 taylornelms Next, read the story of an endangered sei whale that was put down after it was beached with a plastic bag in its throat. Reactions: monkeyswrench. Some whales may dive for 20 minutes or more while searching for food. Rooster tail itself is a visible indicator of slip. Another simple yet effective way to reduce the likelihood of hurting sea animals is to reduce one's boat speed. Top. . . Like the Capt. The Doel-fin has no drawbacks I can put my finger on. It bolts to the outboard motor, typically just above the propeller. Now my dad's boat is a fiberglass copy of those older boats. Head On Is Wrong! 15 is for torque and hole shot, 17 for skiing, 19 for speed and you have 21. When there is 100% slip, the boat stands still and the water moves backward. Return to the prop and lower the pitch by one or two. I noticed some of you already have one and was seeing what your thoughts were on it. Too high of a pitch prop will cause the boat to take off slowly when you go full throttle from a standing start. Slow down. If the device slows the boat down then there is something wrong with the product design as it applies to the particular boat. Then go over the boat with a fine tooth comb looking for issues. redfish bayrat. A tail slap is, literally, when the humpback slaps the water with its tail in a straight up and down motion. I do think it slows broat down too. The boat planes very fast with the tabs down. Proceed cautiously! May 26, 2020 #23 ElAzul Well-Known RDP Inmate #211. The general consensus is they are bad for performance as well as cause undue stress on the leg of the motor. jet boaters come out of the womb knowing about rooster tails. Following these tips can help you safely and responsibly watch whales from your own boat. It seems easy enough, but to do it, the whale needs to lift its rear out of the water in order to create the force needed to slap its tail down. A photographer has captured the tragic sight of a pilot whale whose tail was severed when it was struck by the propeller of a boat. If you've seen one whale, many more could be close-maybe too close to your boat and its spinning propellers. All she could do was try to keep her blowhole above the surface. So, there's always some wasted thrust-- Spray, prop wash drifting backward behind your boat, etc. "If you've seen one whale, many more could be close," the website said. Your hull wants the help out on the corners, not from the middle from the drive. With the tabs down I get a top speed of about 40mph with a 200hp outboard. As the boat picks up speed, these foils lift the boat, and the hull is raised . Avoid trouble, steer clear of bubbles! I have used one on every boat I have had. We love the tail slap, also known as lobtailing. If boaters see signs of a whale nearby like it's tail, or. According to Seeaspout, boaters should slow down and post a lookout if a spout, tail or breaching whale is spotted. Not only did the divers notice the rope twisting around her tail, but a line was running through the whale's mouth. The graphic image, taken by Francis Prez off the Canary Islands. A blue whale can eat as much as one ton of krill per day at the peak of feeding time in Antarctica and fit as much as 150 percent of its body weight worth of water in one gulp. . "Proceed cautiously." It's also important to always sail parallel to the whale's course and don't approach it head-on or cut off the whale's path. They operate in the same manner as airfoils do on airplanes. Worse, she was constantly dragged down by the weight of a 3000-pound anchor pin. . They don't help much at 50 mph but at 35mph and under they really helped me. Mr Bya Lungshot BANNED LUNATIC FRINGE To put it in simple terms you need to inspect your prop first. On a 16 footer with a mid-sized outboard and no tabs, for example, a hydrofoil will usually level out the ride by forcing the stern up and the bow down, and will end or greatly reduce porposing. Recreational boaters should stay at least 100 feet away, she said. Joined Oct 4, 2007 Messages 4,459 Reaction score . A hydrofoil is a surface, usually a wing-like structure, that provides lift in the water. There is a performance boost, usually of two or three MPH at cruise, as a side-effect. Groups of humpback whales will band together when feeding. It runs it prak mph about a foot or 2 off the water. Drop your sails when watching whales! With that said, some boats (most noticeably small boats) tend to be bow heavy and don't respond well to raising the bow. Re: Whale tail stabilizer slowing me down No offense but your preaching to thw choir here. The boat normally gets "on pad" at about 35mph and the "tail" is basically out of the water after that and has little effect until you slow down enough for cavitation plate to reenter the water. In theory: When there is zero slip, the water stands still and the boat moves forward. We used to run flat bottom plywood skiffs that would slide like crazy. People on the water should give whales plenty of room, Howes said. I'm not sure if the Doel-fins alone would help much with the time to plane. Speed should not be more than 7 knots when 200 to 400m from a whale. The faster you go, the more lift the hydrofoil gives. I was thinking about jack plate but could not find anyone using on fish and ski. Re: Porpoising/Hydrofoils. With 2 adults onboard, it gets a great hole shot and gets up on the pad quickly, but if you are slow to trim it, it leans hard Port and you have to back it down to restart the process. The tabs balance the hull and let the drive be trimmed for best angle of attack free from influence. Top. Then as you say the motor sounds fine. See A Spout, Watch Out! I guess that's 2-4 mph slower than what the chart shows on the reference page on this forum. Tail Slap. With correctly tuned tabs the stability is increased and steering is not affected. Plus my boat seems to porpoise and trying to fix that problem. Top speed is the same or maybe 1-2mph kick, again all with corrrectly tuned tabs. I am trying to get better results when pulling tubers and people skiing. One whale will dive down and begin to produce bubbles in a circle below the surface of the water. Gentle as she was, the divers still had to be careful. 1. Don't chase, give the whales space! The most common shape is a triangular design, a bit like a whales tail fin. The device could get expensive.