Well, there's going to be some movement. I was looking and it looks like a guy can get a bunch of balloons with a helium tank like at Walmart. Drop them tied tight with a small rock where it's just dirt, like in eastern Washington farmlands, to try and eliminate some movement. The place I've been thinking about on the west side is a fairly new clearcut with about 3-4' of growth ( grass and bryers) and I'd try a 5' lead to keep it above. Who knows, it might not work. Was curious if anyone else had tried it. Was also thinking about a light weight tomato cage type target that I could set down on the top of a small fir tree in the older replanted clearcuts.