I would Paint the Floor Black, lay a Slatted Mahogany Wood deck, with three coats of Epoxy resin, sprinkle some sand on the last coad for a non skid finish and finish the interior sides in Mahogany plywood. .
Nice boat. My Sled is almost finished.
Do you happen to know where yours was made? I'm thinking they may be made by to different companies with coincidentally the same name. Maybe not though, it's just a hunch.
I believe they were made by two different companies using the same name. Apparently, the company that made the model I have was sold to another company which then sold the crosby name to yet another company who manufactured the sleds. This site provides info about it if you are interested: http://www.fiberglassics.com/library/Crosby