so I got a new one. Feelay had posted back in June pics of a Sportbrella that he had mounted on his boat. I got this one at Sam's for $39.99. I clamped a piece of 1 inch PVC on the upper section of my add-a-seat to put the pole in. The hole in the top of the add-a-seat was not deep enough. At least this one will be tied down and won't do a "Mary Poppins" like my other one did.