I have been looking for deck and patio design software for my mac for a bit and don't really see anything that really looks like quality. Really there is nothing more then google sketchup which I have already but I need a program to tell me where and how to support the deck. I could draw what I want in sketchup but it's unlikely structurally sound, or terribly overkill and I waste a ton of money. I like the looks of the PUNCH software for patio and deck design but it's all Windows only. I suppose I could go out and buy a windows license and boot my iMac 3.06 up into windows but I wanted to avoid that if I could. Any suggestions?