Decks, Patios, Porches and Docks - Flooring Ideas???

I have a screened porch (10' x 22') that is covered with 3/4" pressure treated plywood. The original idea was to put down outdoor carpeting. Well, the carpeting my wife liked is no longer manufactured and she has not found any other carpeting she likes. What are my options to put on the floor other than carpet? The porch is 12' in the air so it will freeze hard during our occasional cold spells.

Tile would be great, but I don't know a way to apply tile without a "proper" base. I hate to add all weight of Dura-Rock & tile only to have the grout crack beacause of freezing.

Any tile placed directly onto wood will definitely crack due to moisture swelling and shrinkage and freezing, and cement board and tile over the plywood may be too much of a load.
Can't you find any suitable indoor-outdoor carpet?
Mike

It's kinda traditional in appearance and does take time to install, but should be durable.