I put a tiller extension on mine, but I remove it when racing with IWCA. Locals don't know the difference.

A class-legal manueuver is to tie the bitter end of the mainsheet to a corner of the tiller crossbar, and tug to steer.

What most folks do when racing downwind is to simply lie face-down on the tramp (head foreward) and steer with your toes. There are lots of photos on this site of IWCA racers employing this technique.