I've done tall bipod, snipepod, shooting sticks, pack, etc. For the past few years I have been using a 9-13" with grooved legs so it is easily adjustable, and it is a swivel. It has worked really well for me. Anytime I can't get prone, I shoot off my pack or off some other object. I don't see myself changing.
I tried packing t a trigger stick on a whitetail hunt back in Montana this fall and that got old pretty quick. It didn't make it past the first trip back to the truck.