I have a permatrim (hydrofoil) on my Mac 420 and it helps a lot as arse heavy and a lot of boat area to lift on plane - but I fitted after playing with engine trim/height and prop - you want everything optimised if possible for load/boating you do before fitting Hydrfoil to get best performance - and please don't say boat is fine as set up by StingRay Starfire Hydrofoil This smooth-running hydrofoil preserves your boat's top-end speed and it gets your boat on plane in half the time of most hydrofoils. This quick start and extra power makes it ideal for waterskiing and other watersports. SE Sport 300 Hydrofoil, fits 35 hp - 300 hp engines The narrow streamline shape of the SE Sport Hydrofoil provides quick, precise control. The unique design eliminates the downturned trailing edge and cupped underside ,This smooth-running hydrofoil preserves your boats top-end speed and it gets your boat on plane in half the time of most hydrofoils. Slip each Doel-Fin Hydrofoil over the cavitation plate directly above your propeller. Each foil is labeled with an arrow, "TOP/TO BOW". Use each foil, carefully placed symmetrically, as a drilling template. Drill both 1/4" (6 mm) holes through the foil. The plate can be drilled from above or below, depending on available room for the drill motor. I have a 2014, 70hp Yamaha outboard and this hydrofoil does not fit it, its too large. The two set screws do not extend enough to clamp onto the anti cavitation plate. If I had done what the instructions said I would have lost it in the water the only thing holding it on my engine was a thin plastic piece that was be held on by the torque tab. Fast Tail Hydrofoil. 3,048 likes · 46 talking about this. Outdoor & Sporting Goods Company. Jump to. Sections of this page. Fast Tail Outboard Hydrofoil price 10 - 30 hp $109.95 40 - 125hp $159.95 135 - 300hp $179.95 $15 post Australia wide . Shop, read reviews, or ask questions about SPORT MARINE TECHNOLOGIES SE Sport 300 Performance Marine Hydrofoils at the official West Marine online store. Since 1968, West Marine has grown to over 250 local stores, with knowledgeable Associates happy to assist. Shop with confidence - get free shipping to home or stores + price match guarantee! Has anyone fitted hydrofoils to their boat and do they work??? I have a 4.7m Pacemaker with a Johnson 70 on the back and to be honest it goes well. But the number of people who tell me to fit foils to it to make it plane faster, stay there at lower RPM and save fuel not to mention it will be more stable at anchor is amazing. The Original Hydrofoil. Doel-Fin is the original hydrofoil developed by an aeronautical engineer to improve overall performance on all boats with outboard motors or outdrive units. Molded in two pieces of guaranteed unbreakable, high-strength plastic, each foil is designed to flex independently to absorb shock. Get the best deal for Hydrofoil Other Boat Outboard Engines and Components from the largest online selection at eBay.com. Browse your favorite brands affordable prices free shipping on many items. For sale, a new hydrofoil with two piece construction for easy installation. Will work on outboards from 9.9 to 30 horsepower and will help your boat to plane faster and also improve stability. New Outboard Boat Motor Hydrofoil Stabilizer Fin Fits 9.9 15 20 25 & 30 HP | eBay Hydrofoil Stabilizers - Sinc