What I'm using is the RWO part that swivels every which way.
http://www.downwindmarine.com/RWO-R...sion-Swivel-Supple-Version-p-301550.html
On, as you say, "regular" cats Hobie mounts them tilted slightly forward. I put mine on more forward than that. I was tempted to put it right in front but I figured to do it the right way as a first attempt. I made a sort of base from epoxy putty to mount the flat attachment base onto the round tiller connector. Working good so far.