I am not familiar with hydraulic cav plate rams, I suppose it can be done but seems like alot of extra effort, can you put a foot overide on? or use an electric ram ( what I have ) you can get a box from Rex that makes the actuator respond very quickly but unless you rig an indicator you wont know where the plate is. The steering issue has me a little confused as the steering should not be difficult at all, sounds like you are binding somewhere or your rudder is not the appropriate design. I would try and maintain the manual overide if at all possible, make an adjustable pedal if needed so you both can use it, less maintenance, and you get feedback from the pedal and handle that you wont get from any power operated system. Just my 2 cents and probably worth less.