I saw a boat that had 40 mil (gauge) clear vinyl "tent" that attached to his bimini top. I took a curious look at it. He had 4 panels attached via velcro. The pannels had loop side sewn on one side and hook sewn on the other side and the bimini had hook along an edge and a flap with a strip of loop so that the panel was like bologna in a sandwich. The flap could also attach itself back to the hook side on the bimini when the "tent" was not in use. The side attachment points were the same. He had a reinforced circle cut out for the oars with a couple flaps of vinyl that hung down to cover the oars when they were "through the hole" . He said that it was pretty bomb proof and he could row it in a downpour, but was harder in the wind. The idea was to sleep on the boat and he went a little overboard. The rest of the outfitting was dialed as well.