Davis Instruments Doel-Fin Hydrofoil
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- Enter your model number above to make sure this fits.
- Increase performance and safety
- Simple 15-minute installation, hardware included
- Promotes fast out-of-the-hole times
- Doel-Fin improves overall performance - even on boats with well designed hulls
- Save up to 30% on fuel consumption
- Faster out-of-the-hole for happier water skiers and wake boarders.
- Maintain lower planning speeds
- Simple 15 minute installation (hardware included)
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Package Quantity: 1 | Style Name: Black
Top Customer Reviews
The good stuff:
The Doel-Fin definitely makes a big difference in two areas - getting up on plane and staying there at lower speeds. In fact, I am now able to stay on plane at speeds as low as about 6-8 mph, which allows me to save fuel and create less of a wake while transiting through harbors. Also, prior to installing the Doel-Fin, the boat had a pretty strong tendency to bang up and down when going into a head sea (swell coming toward the boat). While I wouldn't say it was "porpoising", it was close. After installing the Doel-Fin, the ride into a head sea is much smoother and tends to stay on plane much better when throttling down after cresting a swell.
Really, just two things - 1) Definitely reduced top speed. Prior to the Doel-Fin the boat would do about 31 mph at WOT in a lightly choppy sea. After the Doel-Fin, max speed at WOT seems to be about 27 or 28 mph. This represents about a 10% reduction in top speed. Not a big deal, since I don't really operate the boat at WOT much anyway. 2) The Doel-Fin really, really catches kelp! It is very tricky to get in and around the kelp to fish or dive without snagging the Doel-Fin. When this happens, the usually procedure of reversing the prop briefly doesn't always clear the snag.Read more ›
One more thing to think about. The advertisement leads you to assume it will bolt right-on. This was not quite true. Depending on how the fin plates are arranged on your prop, be prepared for some contorsions and acrobatics, not to mention some out of the ordinary tools manipulations to get it installed in the correct place. Once installed, it's great and definitely worth the money.
Most Recent Customer Reviews
Easy to install,love them.Brings my 17 foot Bayliner right up plane !!!Published 1 month ago by greg wagner
Simply said...this item works! Easy to install and noticeable improvement in getting on plane and overall performance on an outboard.Published 1 month ago by Kevin Jones
have used this product before on a 60 hp honda so i thought i would use it on our new 90hp yamaha-- i was not disappointed- get on plane about 5mph slower - improves the steering--... Read morePublished 3 months ago by Carol Ziegler
Love it - it's a quality product that helps in the performance of my boat, both in getting up on plane and as controlling the dolphin effect of the boat.Published 3 months ago by Rote Fuchs
Easy to install. Zinc gets in the way and instructions to discuss this little problem.Published 3 months ago by William Martin
Worked as advertised. Easy to install. Performance improvement shownPublished 3 months ago by James
I Have a Valco 14 ft Aluminum V-bottom. I put on an 83 15 HP Johnson. the bow was rising too high in local fresh water lakes. Read morePublished 4 months ago by Mr7clean
Fantastic quality part at a very economical price. Works like it says it will. Would definitely recommend to anyonePublished 4 months ago by mike skubish