I am thinking of switching to a Minn Kota trolling motor over the winter. I have been looking at the Terrova model. I really like the spot lock feature. I will be switching from a Motor Guide, that my boat originally came with. Will I have an issue with mounting it and do they plug in just like the Motor Guide? Also I see on this forum a lot of questions/issues with the Ultrex. I have not seen any about the Terrova, is it not as popular of a unit, do guys just stay away from them for some reason. Sorry about all the questions, but this would be a major investment for me. Thanks for any and all help.