A share from David from Bristol Bay, a friend I've known for a long time.  The incidents took place on his grandfather's cabin on the west channel of the Nushagak River in the early to mid-1990s over a period of a few years.

He encountered strangeness, like thumping on the cabin roof, odd sabotage of his fishing nets, tracks, wolf howls that weren't from wolves and owl hoots that weren't from owls, horrible smells, overwhelming sense of dread and being watched, and something repeatedly banging on the side of the cabin with great force.

He eventually saw a Sasquatch and made direct eye contact with it before it ran off into the woods.