I just acquired an older Sea Nymph 12K aluminum boat that is in great shape except for the wooden transom motor mounts which are completely rotten. The originals were of Plywood (roughly 12"x6"x1/2" on the inside, and 12"x12"x1" on the outside). I haven't been able to find the manufacturer's web site to see if replacements are available, and I haven't had any luck finding marine plywood without buying enough to build a whole boat. Any sugestions in either direction would be greatly appreciated. Thanks. Tom