Hi guys (and gals)! I'm setting up a small practice area (22x35) in my suburban back yard, and am wondering how to properly secure obstacles. For example, I have a 3' long 6x6. How would you typically secure that to the ground? Rebar? Stakes? Something else? I also have a pedestal from a concrete birdbath that I want to lay on it's side. How would I best secure that? half a dozen pieces of rebar around the perimeter driven straight in around the edges? Maybe a inverted U shape with about a foot of rebar comprising the U "legs" that gets driven into the ground? Etc. I've tried hammering in wooden stakes around a lot of these pieces, but they break quickly. The 6x6 is currently surrounded by about 8 heavy duty plastic landscape stakes/tent stake thingies, but I can feel it roll when I go over it, so that's not enough. I also intend to get a large log, maybe 5' long and 18" diameter or so to practice "too tall for the skidplate to get over" log crossings. How can I hook that to the ground successfully? Basically I'm just looking for someone who's done a lot of anchoring of obstacles for their best practices to do that. I don't want to do any somewhat "irreversible" stuff like concreting them into the ground or something as I will want to move things around over time. Thanks!