ok, I recently purchased my 1988 sea ox 230c with omc sea drive. trying to get some kinks worked out and ran into a confusing problem. while fishing today i filled my fishbox with ice. problem : the water wont drain. i figured it was probably just clogged like every other drain in the boat. but my method of forcing water through it has not worked. now im trying to figure out how the box is plumbed and which hold on the side of the boat water is supposed to come out of, or where else it coudl come out of. if anyone is familiar with this boat and how it might be plumbed, any help would be appreciated