My buddy and I have made several like these out of conduit and they work well. I really like what steveaqha has shown here. Anyone can do this and you can make them any height you want. One thing I will ad, whenever you make yours, depending on the terrain and if you shoot prone, we've ranged and set targets only to get back to shooting position and behind the scope to find we didn't notice a slight ridge between us and target and not be able to see it. Whoops lol. Stand up and see it fine, lay down and its gone. When going 1k ish, don't make them too short lol.