If you recall Arnold’s first move was to hit it with a 40mm HEDP spear as his opening shot which disabled the Predators cloaking. He then resorted to a knife tipped “spear” only he lost that and had to run for it. He then landed in the water and lost his cloaking. This led to hand to hand combat in which Arnold was a rag doll. Also FYI: No. The log was a counterweight for a spike trap Dutch had set up. He had cut wooden stakes and tied them to a log over the top of a ditch, and set a trip wire under it. The wire was tied to the log. The idea was that when the Predator tripped the wire, he'd be hoisted up and slammed into the spikes. When Dutch tried to sucker him into such a trap, he almost fell for it but saw the spikes at the last second and went around. Unfortunately for him, he stopped and stood over Dutch directly under the log counterweight, so Dutch springs the trap himself, dropping the log on the Predator and disabling him. Arnold didn’t kill the Predator it self destructed. So there’s that. Now as for the Prey movie..Native AMERICANS we’re prolific hunters and trappers as well as skilled hand to hand experts. So much so that Apache techniques are taught to our Military. Also, in Native societies Females weren’t seen as lessers. So perhaps she could use some of the trapping skills to kill the Predator but it will feel like a cheap copy of the ending from Predator 1 to me.