i want a unit that can use the platinum 3d lake maps, has a trolling motor mount or is universal sonar (minn kota), would prefer internal gps antenna, i have a 1197 on console could link i guess, just wanting simple i returned the 997 (no trolling motor mount) ,then got the lowrance lcx37 but got it home it looked like it needed a engineer to hook up, so i returned it too...now i got a new platinum card with no home ,