Hi i am building an Ayton Cross tug boat i will use two 70mm korts with two 5 blade propellers 65mm, i have been thinking about 24 volt motors against 12 volt some say to complicated with the electrics as some things (lights sound winch ect) will only want 12v,this does not bother me at all as i can take a 12 volt feed from one of the two 12v batteries what are the gains and losses of the two voltages T.M