that's kind of what i was thinking about. a shorter tiller that curved sharply, so that it would raise the tiller height. i was just concerned about losing the leverage of a longer tiller.
duckworks carries one, too. it's of a little bit different design, i believe.
If you do switch to wheel steering, make sure you keep access to the rudderhead easy, so when the wheel gear fails you can easily install an emergency tiller.
that's one concern i have about going the wheel route. not only am i concerned that i won't like it but i prefer simplicity. less to go wrong. you can't get much simpler than a tiller. but, i suppose, if i did eventually choose a wheel, having an emergency tiller would help with that; as would proper maintenance.