I have an 85 Bayliner Capri 16.5' boat that currently has an 80hp Johnson which just doesn't want to work. I have found a 68 Mercury 65hp for a good price with controls. Motor runs good and has good compression as I had a mechanic look at it. My question is will it be strong enough to push my boat. I don't need aggressive speed as the boat is mainly a fishing boat with occassional trips n tubing. Any help is greatly appreciated!