I installed the ST-4000 on my 29.5...
by drilling a hole in the console for the drive motor. Search the archives for the following thread which discusses it further:ST 4000 Installation on Hunter 290 Submitted by Michael on 03/26/2002 at 05:59PM regarding Hunter 290. Here's my response in there, but the whole thread has some ideas (The Raymarine drive ring that attaches to the wheel has a hex shaped hole in the back that needs a bracket to keep it from turning. Thats what the hex discussion is about.):I installed the same autopilot on my H 29.5, and the pedestal setup is very similar. I used a 3/8" hex head bolt, and a nut and washer on the inside and outside. Works great and was 50 cents, not 50 dollars. You can't even see it once it's installed because of the close clearance. As for the hole for the motor, I bought the correct size hole saw for my drill, and measured several times before drilling. Don't forget to look at what is behind where the hole will be as the motor extends in quite a distance. E-mail me if you have further questions at mulf@comcast.net I tried to attach the direct link also.