I am replacing the transom on a 14' Wizard runabout, 35hp Johnson. I left the outside skin and will laminate two layers of 3/4" plywood. The old transom plywood came up to the top of the outside skin and had a thin glass layer over on the top, but not wrapping over the skin. I think this was one cause for water getting into the old transom and rotting it out. How does one seal off the top of the plywood? Should I hold it down 1/8", or so and fill it up flush with thick resin and glass? There is no aluminum strip cover for the transom edge.