Thanks for the replies guys. I had never seen a rivnut so when I google it I was thinking it was the coolest thing ever ha. It's a welded boat and is pretty solid. The seat seems pretty stout. I don't think it will wobble. I was thinking I might be able to rent the tool at Lowe's or Home Depot. Where's your shop Big River? I'm in Ridgeland, MS and looks like you're in AR.