Hydrofoil/Dolfin Recommendations for a Neighbors Mercury Outboard 115 Pro XS

[1985 Century Mustang]

My neighbor needs a hydro foil for his 2017 Mercury 125 Pro XS for his Outboard. Can anyone here recommend a good/affordable one that they may have purchased. I see they sell them in a 1 piece and 2 piece. Again price and affordability is what he's looking for. Thanks.

 

[Scott Danforth]

none. they are a band-aid for other issues.

 

[1985 Century Mustang]

none. they are a band-aid for other issues.

His boat doesn't plane. Any suggestions?

 

[Scott Danforth]

His boat doesn't plane. Any suggestions?

Weigh the boat to make sure it's not waterlogged

Make sure the motor is set up correctly

Check compression numbers and make sure it's within spec

Make sure the fuel system and ignition system are working

 

[tphoyt]

I would have to agree. They work for smaller boats and HP but a motor of that size shouldn’t have to struggle. There is likely a better solution to be found. If trimming doesn’t help there is more than likely an underlying issue somewhere.
What kind of boat is it on?

 

[roscoe]

Proper engine mounting height.
Correct prop pitch.

Correct size motor for the boat.

Why did he buy a boat that doesn’t plane?
Or did it just start happening?
If so, something has changed.

 

[1985 Century Mustang]

Proper engine mounting height.
Correct prop pitch.

Correct size motor for the boat.

Why did he buy a boat that doesn’t plane?
Or did it just start happening?
If so, something has changed.

He's not trimming his engine down far enough. He's afraid it's too low. I told him he needs to consider bringing it down. I showed him this thread, he said he's not going to buy a hydrofoil now . He needs to adjust the trim I told him. He will for now on he said. Thanks for the input everybody.