Immediately forward of the rear hatch works great. It is not a problem to adjust as it is quite easy to turn around when you have the added stability of the AMAs. For sailing, the up position is optimal. For standing and sight fishing, the down position is the way to go.
Given the curvature of the cockpit, I have found that it is more comfortable to wear shoes when standing. Otherwise, you will have some sore feet at the end of the day. My shoes have a cushioned sole which really seems to help.
Unless I'm mssing something I can't mount the sidekicks immediately in front of the rear hatch (Revo 11 & 13) using supplied parts. The release button holes in the center shaft are nearly centered where the mounting brackets shoild go. Adjusting the holes in or out throws positioning waaaay off. How did you do it Mike. I suppose I could cut a little off each side of the center shaft and drill new holes. That could get things weak and a little ugly for me to do it.
A piece of that prepainted pipe without holes would work for me. It's a 30mm od with a 1mm wall. Is there a longer length of that that's used for something else I could buy from Hobie parts I wonder? .....and who do I ask that would know?