if its riveted than just drill the rivets out. or if its like the one on mine then there is two bolts to remove. have to do it from the inside so you have to lift the hatch up
Undo the cables and wires then the bolts at the hinge. It isn't that hare but they are awkward. I support them from the rafters with some ratchet tie-downs
Yes, pull out the little storage tray under the top hatch. Steering cable and some plugs there. Throttle cable and remainder of wires have to be dine in the hull.