I have a marina neighbor with a Jeanneau that has it. Five of six (serious) rounds of "fixes" and adds of batteries, bigger alternator, hardware, software, etc. -- it still "locks-up" at the wort times. UFB.

I've asked them: Why did you get this linked system, your boat backs well enough, just have them lock the sail drive in the fore-aft postion, use the bow thrusters (if you need to), and get-on with life. Work-out something with Jeanneau for your economic and other suffering -- get them to clean-up the vestigual crap, so it looks like it was always intended that way, etc.

Dan -- Does your friends 360 degree unit work?