Double ended boats?

Morning all,

Any one tried double ended boats like the roll on roll off ferrys?

Is it possible to redefine which way is forwards on the fly and use lua scripts to redefine the function of servos? I would like to use only rear rudders to test their responce, then do the same with the front, or disable all rudders and drive the boat back skid steer with motor pods.

I guess I could define the base platform as a skid steer then use lua scripts to drive the rudders to test their responce.

Any brake functions using rudders for boats with at least two rudders? Perhaps a little more energy efficient than reverse thrust. I should have 180 degree of rotation on the rudders, partly so they can get out of the way when turning on the spot.

Thanks.