This is a φουσκωτη board sup that somewhere was leaking air, as the majority of which we can repair it.
This inflatable surfboard sup it has two valves, with a view to inflate the separate parts of the board. The specific feature of these cases is they have extra perimeter seam in the middle of the board, and one has air leakage is more difficult to repair, but to find it at this point.
We started to roll out the inseam with a view to find the air leak , and that is what happened. From there we continued the process of sticking a type of Pvc designed to seal the φουσκωτη board sup, something which was achieved in the end.