Well I was browning the old BBQG forums trying to get information before they went down but luckily I found this forum now. I have a few questions. I am going to be building a few different islands in the back yard from steel studs and hardiboard. The local HD only had 2 1/2 steel studs. Is that strong enough or should I try to look around for some 3 5/8" ones. The islands are going to be granite slad tops and my BBQ is a firemagic elite 50 so I am going to have some serious weight in the island. I was planning on using 1/4" hardiboard for the sides and 1/2 for the tops. 1/4" should be fine for the sides correct? Finally I was going to raise the island off the patio using some Trex. Are people lining the entire underside of the island or just blocks here and there?