"I've heard it said that it would be difficult to find the bones of a dead bear in the woods of the lower 48 (United States). "
True - unless you shoot that bear, for then you'd have the carcass with the bones, and do not have to search for it. And BTW, having "burial method/system" would presuppose sapient nature in bigfeet - humans started it rather recently. Neanderthals did not have burials, IIRC.
The reports of hunters, apparently, encountering bigfoot go along these line:
"I couldn't shoot because the thing looked too much like a human".
who knows?
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"Neanderthals did not have burials, IIRC."
Maybe my second language is troubling me but I don't understand the statement... IIRC?