Hey, not sure if you are talking about portables or permenant stands. We use mostly permenant stands during rifle season. Two sections of scaffolding which gives you a 4x8 platform on top. We build walls to make a 4x4 box and use an old sky light as a roof (just sit it on top) Hinged windows and door. It is kind of like hunting from the living room, but hey you may as well be comfortable! The other 4x4 section that is not enclosed is great for bow hunting.

It seems that portable stands, are just not worth making. You can get a decent ladder stand after the season for about $60.