Hi All; You can do a rough check for a swollen cb without having the boat in the water by trying to pass a hacksaw blade between the trunk liner and cb. It should pass freely the whole lenght. Another short term fix if the board is not to badly swollen is to mount a hacksaw blade in a recip. saw and make a pass on both sides. This can be accomplished while the boat is on the trailer. Being conservative I ground the kerf smooth on the side of the blade. regards, Don M15-248 M711 too