Berny,

Sometime ago on this forum someone (possibly Phill?) described a system which used the tension in the halyard WHILE HOISTING to centre the tillers using a pulley system under the tramp. I have to admit to not paying too much attention at the time as it's not a problem I've encountered with my own setup. However, such a system may be what you're looking for. Dowsing tends to be quicker and the boat can take care of itself as usually you'll go dead downwind to dowse.

On my Stealth I bring my halyard back above the tramp, through a ring on a light bungey and then forward through the sock as a retrieval line. I find that I can reach/cleat/uncleat the halyard from anywhere on the tramp and therefore sitting/kneeling/whatever on the tiller is sufficient to keep the boat tracking. I also know of a technique where you put a foot over the rear beam and jam it between the beam and tiller bar, but it's not one I've used.

Try a search on the forum as I'm sure this has been discussed as a thread or part of another thread before.