That is amazing. I have a small piece of chain link fence lying around for YEARS and now you've given me an idea to use it overhead to suspend hanging pots. As for drainage with the corrugated sheeting, how about just slightly inclining one end of the bench. With those corrugations, excess water should slowly wend its way down and out?
Oh, and Brr....winter in Hawaii. I'll get right to work knitting up some warm socks and mufflers for you *bfftt*
