I inherited a 14ft aluminum fishing boat 2 years ago. Haven't had the time or money to work on it. This is my first boat so it's all new to me. First question is I need to replace the wood on the transom is pretty spongy. What kind of wood should I use? It has an old Sea King 12 HP on it now. The cover has been hand painted so I don't know if it's truly a 12 HP or not. I talked to someone about going over the motor, he said good luck finding parts for it. So, my second question is what would be the biggest for a boat this size? My guess is 15 maybe 20 HP.