Here's a little article I came across about an island off the coast of my hometown area, the Kenai Peninsula in Southcentral Alaska. We have stories about a local hairy hominid in my town of Ninilchik, but for some reason I was told we call it the "Slothman". I assume the close proximity could mean that the reports off Port Chatham may be the same iteration of the creature, although it could also be an insular subspecies.
Either way, not too terribly much info on the cryptid itself, but you might enjoy the read anyhow. http://www.onlyinyourstate.com/alaska/scary-abandoned-town-port-chatham-ak/.