Same as ours only I used reg plywood and painted it instead. Works great, doesn't take a lot of space (but I have a single smallish drop board similar to yours shown)
".. there is much you could do at sea with common sense.. and very little you could do without it.."
Capt G E Ericson (from "The Cruel Sea" by Nicholas Monsarrat)
1984 Fast/Nicholson 345 "FastForward"