just bought a 2000 viper coral . 225 efi . nice boat. question regarding trolling motor? motor guide 67lb factory motor. first off, is it any good? second more pressing question? 24 volt . boat has only 2 batteries? how does it work? what stops it from draining all batteries and not being able to crank the motor over because both have drained? ive never seen a 24 volt system with 2 batteries before? need help quick . thank you