Take a look at Patrick Smith's "Kifaru" line of tipis. These are lightweight, rugged, and nearly impossible to blow over in a wind. Best of all, they come with lightweight stainless steel stoves that warm the tent up fast. There are no floors sewn into the tent, so you don't end up with mud and water ponding inside. You can cook on the stove if the weather is lousy.

These are unconventional, but consider that the plains indians used them as their homes, they knew there were major advantages. I have the 12 man version. Practically speaking, this tent would be very comfortable for 4 if you are sleeping on a cot.

Check out his web site at www.kifaru.net. Patrick is the original founder of Moutainsmith backpacks. He now devotes himself to products specifically designed for the hunter, and particullarly the backpack hunter.