Any displacment hull sneakbox

[Jay K]

I know of a guy (have not witnessed it in person) who achieved high teens/low 20's with a 15 hp with hydrafoil on the motor. I can't confirm it though. IMO, something like an Estuary really shines on those days where you can't go fast.

 

[Eric Patterson]

Here's a short video of my Devlin Broadbill. It is a planning hull and runs 30+ with a 25. I know it is a lot different that what you asked for but perhaps it will give you food for thought.

https://www.youtube.com/watch?v=ytLvowygM_E