Back in the day, most Hobie sailors would tweak the weather helm on their 16s by redrilling the TOP hole on the rudder. By relocating that hole, you can increase or decrease the amount of weather helm. From what you describe, sounds like you have neutral helm.

Redrilling was a "fix" from back in the day. There is probably a "bolt on" item by now. In any case, why not start a new thread asking for safety and tuning advice, there is more know how out there than you really want to know!

In the mean time, when things get hairy, consider trailing a knotted line behind the boat. Not good for performance, but at least you'd have something to grab in a life threatening situation.