Originally Posted by jyasaki
What did you have done?
The seam glued on the bottom at the back of the port side aft sponson ripped loose, this was due to the force of the water hitting it. Just that very narrow lip is enough I guess if the boat makes enough speed. It was where the tube set meets the cone on the back of the tube. I had demaree glue 6 ft length by 12 inches width of material on the bottom on both sides running back and covering that seam on both sides. This also makes the sponsons a bit tougher where they have the most contact with the water and helps prevent punctures from debris in the water. Generally underway the sponsons are out of the water, I think it was in instances of reentry coming off larger waves that aggravated the problem. I have seen this happen to other boats. If I was making sponsons I would glue it at the back so there is no leading edge of exposed material, but what do I know? Maybe it is too difficult to manufacture that way anyhow it's fixed, along with some minor maintenance touches.
Just noticed that a "new" tube set is 11,500.. that's why I maintain the one I own. Yipes!!