Dont know the weight,but its a 15 ft glasstream bowrider. It's a ford 4 cylinder motor 2.3 liter. I'm wanting to fish out of this boat,so i want to add a trolling motor to the bow. Any help with shaft length and lbs would be appreciated. I was given this boat, cant afford a bass boat, I'm wanting to modify the front of it by adding a platform and pedestal seat. Am I crazy or can this be done. Also, when I buy the battery for trolling motor is there a way I can hook up the alternator to trolling motor battery?