SE Sport 300 Hydrofoil, fits 35 hp - 300 hp engines

Installed on a Mercruiser 5.0 with alpha 1 gen 2 outdrive to solve slow planing. The boat is a 20' Monterey Montura. Plenty of power, but the boat loaded just has a stern heavy situation. I don't allow the kids up front when the boat is on plane and the water is choppy so to the big couch in the back they go, hence the always stern heavy. Boat would plane out nice at 18-20 mph but that's a tad fast for kids learning to knee board etc. With the SE300 it made all the difference in the world. Now it has very little now lift and full plane is achieved at 14-15 MPH. Much more comfortable for everyone in the boat, and I can safely see over the bow while seated. Install is straight forward, follow instructions and center the foil and mark your holes carefully before you drill. I also chamfered the holes once drilled to relieve any chips or micro cracks from drilling. Then treat the holes with self etching primer and small paint brush. I used large area stainless steel washers (not supplied) on the bottom where the hardware contacted the cav plate. This spreads the load of the screw over a larger area and will prevent cracks or damage to the cav plate.

Works exceptionally well! Nose of the boat stays down from slow speeds all the way through the acceleration to cruising speed. It was easy to install and the white looks great on my white motor. It also helped my fish finder transducer maintain constant connection with the water while traveling at cruising speed. Definitely recommend this

This review is intended to add some insight for installing this product on the above mentioned MerCusier outdrive. Overall, the instructions were ok, but this mercrusier outdrive was not covered very well. Here is what was missing for my install. Drilling the "rear, away from the boat" holes was covered & they mentioned that some units needed the "closer to the boat" holes drilled from the bottom of the cavitation plate. This is what my boat required, but to get my drill in the proper position, I had to remove the prop. Which was not covered. Once the prop was out of the way, the drilling went as explained. The "Drilling Template" was a nice tool & the distance markings were a very helpful. When putting the hydrofoil on the cavitation plate, the rubber washers, skinny & fat, were covered ok as to their position, but putting them between the hydrofoil & the cavitation plate was missing. And the "fat" rubber washers just slid off the screws, so getting the screws, washers, holes, underside washers & nylon locknut was a little challenging. The "skinny" washers fit the screws snugly & would stay in place when putting the hydrofoil in place, so that helped. Had the "fat" washers been sized the same would have made this part of the install much easier. Lastly, I would have liked the instructions to cover how "Tight" to tighten the screws holding this together. I used a 1/4" drive 7/16th socket with standard #2 phillips screwdriver. The rear screws went ok, but because of the layout of the outdrive, the "closer to the boat" screws had an issue with the screwdriver not being able to lineup straight with the phillips head. I tightened them down & did not strip the phillips heads , but this was a challenge. Possibly an "Allen Head" screw, with the "right angle" allen head wrench, may have been a better choice for this hardware. This install took me about 2 hours to complete, mostly because I had to go back to the garage to get different tools to work my way thru this install. If I had known about my issues were in advance, I think I could have completed this in about half that time. This review is not meant to "BASH" this item. It looks great on my boat & I can't wait to test it out next weekend. So hopefully this review will help someone in the future. HAPPY BOATING...

Installed on a 2005 Glastron GX205 w/ 5.0 270HP engine. Taking it out tomorrow so I will see if I notice any changes in operation and holeshot and will update here. Hoping it eliminates or greatly improves the big “squat” when launching from a stop. Pros: 1) Template to mark holes for drilling was perfect. 2) Has a nice look to it. I need to repaint my outboard now! Cons: 1) had to go buy longer stainless steel hardware as the included screws I could barely get on thread rotation on the nuts without using the rubber washers. I purchased actual stainless bolts (not Phillips screws as you can’t get that “umph” to tighten). I also purchased stainless metal washers to go on the bottom of the rubber washers and stainless lock washers. I am NOW confident this is sturdy and not going anywhere. Just need to use my cutoff wheel to trim the excess on the bolts. 2) part is plastic, I didn’t even think about what it was made out of. Idk how long it will last out here in AZ as plastic gets brittle with excessive heat so I’m already questioning the longevity of it but for $75 or whatever it was we shall see!

Definitely feel the difference while driving boat in water. Quicker response while making turns and smooth period. Quality is good .

I thought this might be an overkill for my 50hp Mercury but it turned out great! I no longer have the wash out when coming out of the hole and the stability has improved. Any decrease in speed is hardly noticeable. I used the same model on a previous boat with similar results. I did put a piece of yellow reflective tape on the back of the fin so I wouldn't bang my knee on it, also makes it easy to see in the water.

I have owned multiple small boats, mostly small Carolina Skiffs: j16 (40hp Johnson, 50hp Evinrude), JVX16 (50hp Honda, 60hp Suzuki). On all of these boats/engines, I've ended up installing an SE-300 Sport Hydrofoil. Everything on a boat is a tradeoff, and hydrofoils are no different (weight distribution, trim/self-leveling tabs, hydrofoil, etc.). I want to sit as far rear in a boat as possible to have a smoother ride, but that usually has the effect of porpoising and slower hole-shot. I also keep these hulls in the water year-round, so I did not want anything like trim/self-leveling tabs that would be hard to maintain and paint (I have nothing against trim/self-leveling tabs, they do work really well, and I have used them on a 16 Semi-V to stop violent porpoising). My experience has been that this hydrofoil does improve my boat's performance. I'm currently running a JVX16 Carolina Skiff with a 60HP Suzuki 4-stroke. Installing the SE-300 Sport hydrofoil eliminated cavitation I was experiencing during hole-shot, improved hole-shot particularly while carrying more load, and widened the trim range of my motor while on-plane before porpoising starts. Among other things, this particular hydrofoil is aesthetically pleasing (no bright colors like some of the other brands). Because my motor is mounted on the higher bolt hole, this hydrofoil is not producing any noticeable drag (my WOT speed has not changed).

Installation using the included template was simple and easy. Great product. It really made a 200% difference in getting our 16’ open bow with a 90 horse motor on plane quickly. I fully recommend this product.