I have had the Ulterra 80lb with I-pilot {not I-pilot link} since last May. It drove me crazy in that it would just stop responding to the remote or foot control. I took it off the boat two times and took it to an authorized service center and it would work perfectly when they tested it. After many calls to customer service it was finally determined that the wiring and breaker from the batteries to the trolling motor were not heavy enough. Minn Kota finally told me that it must be at least 8 ga. and mine was 10. I changed it out to 6 ga. and have had no more issues. I really do like it a lot. I wish the spot lock would hold on spot better but it sure beats messing with an anchor. The stow-deploy feature is great for an old 78 worn out fisherman.
I have bought a different boat and I have not decided for sure that I am going to put the Ulterra on it. I am wondering if the spot lock on the Ultrex is better than the Ulterra?