We are redoing a houseboat and have removed the old decks. Original construction is 4 inch square aluminum frame with plywood and fiberglass on top. We have removed the plywood and fiberglass (the glass had crack and leaked and the plywood was rotten). We would like to put down some kind of a rubberized decking (for slip-resistance) and what I want is something like a perforated metal that has been rubberized. But I can't seem to find that. Alternative is to lay plywood again, and put rubber or vinyl matting (like what is used in fitness clubs, or on docks, or in playgrounds). But I'm concerned about using the plywood again. Any other suggestions???