Ya they are nice stands and cheap to build. I'm going to build one but will modify it some to make simplier. Will use treated OSB on the floor instead of 2x4's, maybe drill a few holes here and there to let the water drain off.
Was also thinking of making it a littler bigger, 4x4 incase I decide to frame it in some day and put a little propane heater in there. I'll be hunting moose out of it in late Novemeber so it could be a little chilly.