wow. what an amazing boat that is. incredible detail and function. any more full pics of it, JAW?

to the OP, hydaulics probably arent going to be a viable application for tabs. my vote goes to servo controlled surfaces. 1:1 boats use hydraulics b/c of the convienent source of power from power steering pumps on the engines. use the same logic and use the easiest power source for your boat.

FWIW, i also think this is the appropriate subforum for the question; it is reguarding a scale Donzi...