I have a short bipod on many of my rifles. They serve two purposes. First, if you have time to set up for a long deliberate shot, prone is a great option, particularly with the support of a good bipod. Second, and this is particularly true of my coyote rifle, the bipod is a great way to keep it up out of the dirt while I hold the shotgun. I don't think I've every killed a coyote off the bipod, but have shot many over sticks. I prefer the Primos trigger sticks since I hunt brushy country and often sit on a "dove bucket" rather than right on the ground. Plus, the trigger sticks work great for stands when you have to stand. The only rifle on which I have a seated height bipod is my prairie dog rifle. It's often hard to shoot prone in the grass, and I don't want to carry other heavy rests on walking varmint hunts.