[Jason W]

Well if you have any old say two stage gear boxes around use those, they work by shoveing a piece into one of two gears, but if you hold it in between the two you have a neutral that does not engage the drive motors. Look up how a shifting gear boxs works, and use that so you can shift into a gear or into no gear..... or just keep tabs on your battery life, and plug your cart in when its idle : P