Hello I have a 1966 that is a pull start motor all the battery dose is run the lights. But because the motor is a pull start there is no generator or alternator that means I the only way the battery gets charged is if I take it out and charge it with a charger. I was wondering is there is any way to fix this problem I would like to add a radio to the boat at some point and really dont want to have to pull the battery every time I use the boat lol.