OK, I got two shots up here…they’re big, I don’t know how to shrink them.
If you’d rather use props, the Marine supply stores also sell hatch props that slide and lock. Use two if you have a real spare mounted on the engine cover.
One pic also shows how I had the spare mounted to the engine cover. A little of the aluminum ring can be seen. The engine cover was sandwiched between the aluminum ring and the spare wheel.