The SIM card is a very small piece of evidence and easily disposed of. Cut it into four pieces and dispose of in four different trash cans around town on trash day. Why go to the trouble of hiding it in a construction site that LE can tie directly to the actor? I can think of a few good ways to dispose of a cell phone so it will never see the light of day, at least not for a lifetime. With regard to hiding the remains, while I'm sure LE has gone through BM's cell phone, I am wondering about a hand held GPS? You can get them in the same store as the trail cams. Once the waypoints have been set, it does it's job in getting BM well out into the back 400 and back and is disposed of. I really don't think BM took SM very far, and he may have moved her once. We have another case here at WS where I was "boots on the ground" where the actor killed a local girl, took here to a spot along a rail right-of-way, buried her, then went back later, dug her up (leaving evidence) and re-buried her 42" down behind his place of employment along the same rail right-of-way. All just a few miles from where he lived. Appears to be more common than one would think. While the actor does want to quickly dispose of remains, they are just not going to schlep a body over their shoulder for long distances (as you have already noted). Wheelbarrows, carts, ATVs or even the small carts hunters use for moving large game have been employed for this task. Might have even used the Bobcat. Going back to the trail cams, I am wondering if BM had to go retrieve the SD cards each day, or if they were live feed ($300.00 each) to his cell, and where exactly they were located. I keep thinking of the old "I have a gun, a backhoe and an alibi", or in this case "a bobcat, 400 acres of nothing and a bunch of planted false leads".