I have no experience with this type of application, although these are referred to as "trim tabs" in the fishing community and are used on boats from 19' all the way up to multi-million dollar sportfishing yachts. The difference between hydraulic (bennet) and electric (lenco) has been discussed on numerous fishing forums with no real advantage going to either one. I have used both of these types in fishing applications and the electrics were faster than the hydraulics, but that is the only difference I could tell.