Its either Velcro or foam rubber underneath! I like the Velcro idea, thanks Joel! PS, its already 80s here. Had her on the water yesterday. Ran about a quarter tank out of her putting around. I'm up to 8 hours on it now, think I'm ready to adjust the valves, change the oil and plugs, new tyranny fluid one more time and a last tightening of everything under the hood. I'm even getting the hang of backing the ole girl! ;-)