Here's one of my plans I've been thinking about for this summer. I'm going to go back to the last place I had possible bigfoot activity (power knocks and calls). This spot has a history of bigfoot activity, a water source, big timber, and plenty of food. Its elevation is around 4000ft, so it will be at least July or August for the huckleberries to ripen. Then I'll wait for clear/mostly clear and calm weather to go. On clear, calm, no moon nights I'll focus more on hearing calls. On clear, moonlit nights I'll focus more on possible camp visitations. Either way I'll still have my FLIR, parabolic mic and recorder set up at night only.
My plan is when I arrive at the camp site. I'll get out and walk around the camp site, lake, road, and trails looking and listening to see what is and what was around. When I get back to the camp site I'll change my clothes to camo or earthtone colors. Then I'll clean up the camp site if it needs it and then work on getting a curiosity bait. When I'm at the camp site I'll do a short single tone whistle around every 30 minutes or so and write in my field notes/journal ever so often. I won't have a campfire and I don't put food bait out. IMO the bigfoots don't need our food and are better without it.
Around dusk I'll set up the FLIR, parabolic mic, and recorder in a blind or tent and face them towards the area I heard the power knocks come from. Hopefully by now I'll have my curiosity bait and I'll set it up 6ft on a tree about 20 yards or less away in front of the FLIR. I'll put a trail camera on the opposite side of camp where I don't want a bigfoot to approach. Then I'll do one last check of the equipment to make sure everything is working well and in place. Before I crawl in the back of my truck, I'll do three tree knocks, wait then do one single tree knock only loud enough for something around 100 yards or less to hear it. Then I'll listen for about 10 minutes for a return knock or footfalls, hopefully coming my direction. If I hear something or not, I'll get in the back of my truck and get out of sight and have the canopy windows open so I can listen until I fall asleep.
In the morning I'll turn off all the equipment and check everything out. If I get anything good I'll adjust my plans accordingly. If I don't get anything it's no big deal. Then I'll repeat everything for the duration of my stay.
Now I just have to wait several more months to try this plan out at this location.