Well then. If it was my boat I would do another 12 or maybe 18 inches of deck on top of the gunwales, put in a cross member at the gunwales and at floor level, put a front on to make a box, put a door in it and then put on a remote controlled bow mount troller with battery in the box. And use the rest of the box for other storage needs. Did much the same to an old semi vee I had back when heck was a pup. Did it with 3/4" CCA plywood and treated wood members. Covered it with brownish turf. SS fasteners and big aluminum pop rivets. Never a problem.