Take a look again. You are talking about very heavy, slow moving, slow turning work boats. They need trolling patterns programmed into the pilots. That is a niche market they went after. By the way I saw a lot more Robertson pilots back when I worked in Alaska
. Maybe you worked in a different fleet.
In the last 10 years I have equipped dozens of long range fishing
boats out of San Diego
. None of those had Comnav products on board. None of the yachts I equipped had them either.
Every time I have called that company it is either just no return call or a reference to the manual. Rarely do I get somebody on who can quickly give me accurate troubleshooting information.
Last time I called Comnav on an autopilot
an accessory bought 2 years ago, I got "We have no information on out of production parts". The company declares things obsolete and refuses to provide any data or help on it. They then offered to sell me a complete new pilot! That is not something you want to hear when sailing in a distant country.