Board took an odd flip last week and mast extension drove a hole in the top surface near mast track, pretty unusual spot, all the board casing was there, just dented and pushed in a bit, I left it there and filled with about 1 cm deep of Kneadit Aqua. quick sand with wet and dry paper and it has come up quite well. I won't bother painting it , as the board is old.

Any experience with Kneadit and can I expect the repair to last a while? If I get six months out of it I'd be happy, board ( Bic 283) cost me $250 and is otherwise fine.