Originally Posted by Jake

It's a strange tiller too - they can steer the boat while standing up by swinging the rod/bar from side to side. I hope he has something else to hang on to...I have visions of those capsizes where you slide down the trampoline with the tiller in your hand...which makes the rudders turn more into the flip.

The exact same system has been used on Dutch merchant ships since the 1600s.
There are extensions going to each side so he can steer from both hulls though, no need to stand on the center platform.

The steering action is the exact reverse of a normal tiller though, I wonder if they changed that somehow.