If im looking at an aluminum bass boat in the 17' to 18' range that will weight anywhere from 1000lbs to 1300lbs empty what size trolling motor would be sufficient? I dont fish tourneys and it is not that windy here in North Texas, i just dont want to get pushed around in a little wind. Most of the boats im looking at are packaged with a Minn Kota 40. Is there a real difference if i bumped up to the Minn Kota 55?