I've used the short Triggerstick quite a bit & it's worked great when using sixugns. I've taken several deer with it. I carry a very light weight folding chair with a canvas seat, probably weighs about 1 pound, I sit on this, drop the Triggerstick out to full length & rest my left elbow on top of it. This makes for a very steady hold, either scoped or iron sights & it takes up very little space. I just have it sticking out of my backpack so it's handy whenever I need it.
I also have the Bog Pod with the PSR rest & it's working great also, I really don't need the tall extension, so far I've never needed it. The Triggerstick is much smaller.