Tripod tree stands can also be known as a revolving stand, rotating stand or tower stand. If they have a skirt they can also be called a blind.
In parts of the country where trees are sparse or non-existent such as the Texas brush country or the prairie of the Midwest, a tripod stand is the only suitable type of tree stand.
It is not strictly a tree stand as it is not placed in trees. It is a platform with either three legs or four legs. The platform may or may not have some sort of enclosure to protect the hunter from the weather and give some camouflage.
Tri pod tree stands often have shooting rails to provide a rest for a firearm.
Because of their size, tripod tree stands are not portable and are usually left in one spot for long periods of time especially compared to other tree stands. This however can be an advantage because it lets the animals in the area get used to the tree stand.
The advantages for trip pod tree stands are, the usability of them when trees don't exist, they are the only way to gain the advantages of hunting from above. With models that come with a blind or when tripod tree stands are coupled with a blind, they can protect the hunter from the elements. Tripod tree stands also can be very comfortable due to their size. Tri pod tree stands also typically provide the hunter concealment.
The disadvantage to tri pod tree stands is their lack of portability.