My Pirate...ship?

This is my notorious and dreaded pirate ship, the Henry Crun (anyone here know the Goon Show) The setting is Springfield Lake. Only trouble with this ship is that I'm not just the captain, but the crew as well...*and* the bleedin' galley slave, goose me wi' a marlinespike else!<br /><br />I've yet to figure out where to mount the cannon...