well was down working on our motor today,(currently in a refit) went to change out the water pump hose and the seacock valve does not shut off.currently not feasible to move boat to the hard yet.anyone with a hunter 33 know the seacock measurements and I have been asking around the marina about changing out the valve with boat in water.we have a diver in the marina and a couple of other owners who have done this before.any help would be appreciated.