Skip to content Skip to navigation menu

DAVIS INSTRUMENTS
The Original Doel-Fin Hydrofoil

$35.99

Add to My List
In stock online.
Model # 351221 | Mfg # 440

Product Description

Get your boat on a plane quickly by increasing the lift generated by the engine. They also allow you to go more slowly while still remaining on a plane, so fuel consumption is decreased.

  • The injection-molded tenite polypropylene fins install easily on the cavitation plate of most outboards from 5 hp and up
  • Includes Mounting hardware
  • Lifetime warranty

Specs

The Original Doel-Fin Hydrofoil

Color Black
Compatibility Doel-Fin
Type Hydrofoils

REVIEW SNAPSHOT®

by PowerReviews
Davis Instruments The Original Doel-Fin Hydrofoil
 
4.3

(based on 7 reviews)

Ratings Distribution

  • 5 Stars

     

    (5)

  • 4 Stars

     

    (1)

  • 3 Stars

     

    (0)

  • 2 Stars

     

    (0)

  • 1 Stars

     

    (1)

86%

of respondents would recommend this to a friend.

Pros

  • Easy to use (3)
  • Good performance (3)
  • Reliable (3)
  • Weather proof (3)

Cons

No Cons

Best Uses

  • Boating / sailing (3)
    • Reviewer Profile:
    • Casual/ recreational (3)
    • Was this a gift?:
    • No (4)

Reviewed by 7 customers

Displaying reviews 1-7

Back to top

 
4.0

Does what it says

By Kc

from California, MD

About Me Casual/ Recreational

Verified Buyer

Pros

  • Good Performance
  • Reliable
  • Weather Resistant

Cons

    Best Uses

    • Small Boats

    Comments about Davis Instruments The Original Doel-Fin Hydrofoil:

    Easy to install on my alpha one equipped 19' better hole shots and porpoising is no longer a factor.

    • Was this a gift?:
    • No

    (1 of 1 customers found this review helpful)

     
    5.0

    really works!

    By richie

    from long island ny

    About Me Advanced

    Verified Buyer

    Pros

    • Easy To Use

    Cons

      Best Uses

      • Boating

      Comments about Davis Instruments The Original Doel-Fin Hydrofoil:

      I had one on my old boat years ago and forgot how good they are. I would put it on a boat even if I did not have problems. it works that good

      • Was this a gift?:
      • No

      (1 of 1 customers found this review helpful)

       
      1.0

      Didn't fit

      By Pete

      from Ny

      About Me Casual/ Recreational

      Verified Buyer

      Pros

      • Easy Storage
      • Easy To Use
      • Waterproof

      Cons

      • Flimsy

      Best Uses

      • Boating
      • Canoeing

      Comments about Davis Instruments The Original Doel-Fin Hydrofoil:

      It didn't fit on my.LEHR 5hp propane outboard

      One side did fit the other didn't I don't know why

      • Was this a gift?:
      • No
       
      5.0

      What a difference with my boat motors performance!!!

      By Finny

      from Carlsbad, California

      About Me Casual/ Recreational

      Verified Buyer

      Pros

      • Easy To Use

      Cons

        Best Uses

        • Boating

        Comments about Davis Instruments The Original Doel-Fin Hydrofoil:

        I easily installed the Doel-Fin on my boat motor and less than 30 minutes later I was back on the water. Now my boat gets out of the hole more quickly and gets up to plane. I couldn't be more happy!!!

        • Was this a gift?:
        • No

        (2 of 2 customers found this review helpful)

         
        5.0

        worth the time and money to install

        By Captain Bob McDaniel

        from Quepos, Costa Rica

        About Me Professional

        Verified Buyer

        Pros

        • Good Performance
        • Reliable
        • Weather Resistant

        Cons

          Best Uses

          • Large Boats

          Comments about Davis Instruments The Original Doel-Fin Hydrofoil:

          This is the second set of Doel fins I have used. Had them on older 140 hp twin suzukis, when I put new 140 hp motors on the 29' dive boat with same props saw slow hole shot and having to work to keep it on plane. Put the new set on which took about 30 minutes in the water in the marina, and immediantly noted a improved hole shot under heavy load and planning out at lower rpms and steady . these work and work well on twin motors.

          (4 of 4 customers found this review helpful)

           
          5.0

          Performance as advertised

          By Jersey Bounce

          from Georgian Bay on Lake Huron

          About Me Advanced

          Verified Buyer

          Pros

          • Good Performance
          • Quiet
          • Reliable
          • Weather Resistant
          • Worked Effectively

          Cons

            Best Uses

            • 15 25 Hp Motors
            • Large Boats
            • Small Boats

            Comments about Davis Instruments The Original Doel-Fin Hydrofoil:

            At a friend's suggestion, I installed the hydro foils on both 15 and 25 HP outboards on 14 foot and 16 foot aluminum boats to lower the bow when driving alone in the rear of the boat. The hydrofoils solved the high bow problem, dramatically shortened the time and distance required to plane the boats and at a very low cost. Installation did take more than the 15 minutes suggested in the literature but was time well spent! Am purchasing two more hydrofoils for friends who are having the same issue I used to have.

            (11 of 13 customers found this review helpful)

             
            5.0

            Out of the whole on full plain, awesome!

            By Capt. Gary

            from Galveston Bay and Gulf of Mexico, Texas

            About Me Professional

            Verified Reviewer

            Pros

              Cons

                Best Uses

                • 24' Center Console

                Comments about Davis Instruments The Original Doel-Fin Hydrofoil:

                They were installed on both my 150 hp Merc's and the performance was awesome. Out of the whole on full plain in a shot. Allowed the boat to maintain plain at a slower speed which was amazing. Found to be less cost than going with four bladed prop in this application.

                Displaying reviews 1-7

                Back to top