I found a ladderstand on public property once. It was disassembled and tucked into some bushes, and had been there so long it had a good sized tree growing through it. It was missing the spanner bar from the ladder to the trunk. They are illegal to leave on public lands, so I packed it out, cleaned it up, fabricated the missing part, and put it back into service. I think whoever stashed it, forgot where they left it.
The only real difference between a good tracker and a bad tracker is observation. All the same data is present for both. The rest is understanding what you are seeing.