Not really concerns, just fleshing out reality.
If we are talking about a 8 foot tall primate? The hole would have to be at least double the height. So 16 foot deep? And the hole has to be wide enough that it cannot parkor up the side by pushing against it. If the Bigfoot is squared? That’s 8 feet wide. So let’s say 10 foot wide? 10x16 foot pit? *** (Maybe even deeper) 12x20 foot pit? If a 8 foot tall Bigfoot raises its arms and jumps or uses a step on the wall? How high can it reach?
https://www.si.com/extra-mustard/2013/03/06/here-are-16-things-you-probably-dont-know-about-shaq-who-turns-41-today
A Tiger pit is usually a thin lattice of bamboo for the entrance. What about the lattice sections at Home Depot? And some fake duck hunter grass?
Tranquilzing it is fine. But how to get a person into the hole and then the Bigfoot back out of the hole? A crane? A tripod, block and a bumper winch? Would need easy access up to the pit. Unless our benefactor owns a helo…..
A bilge pump makes too much noise. I’m thinking like for people in the SE or the coast of the NW. If the pit was constructed on a slope, you could push pipe into the hill side and drain the pit. Just don’t want Bigfoot to float out of the pit or drown.
The lights would need to be able to shine into the pit. Pulling headlights up to a 16 ft pit will not be helpful. I would want bright lights to help blind it while someone is lining up the tranq gun. Not a job for a Walmart headlamp.
Winter makes me worry about access, and getting the animal out of the hole. It may be best to just shut down for the season. Your not going to use a snowmobile to do it.
4 feet is the rule for caging protection in construction. 16 feet? Your dead. It might be wise to put some cribbing in but do not wanna a Bigfoot ladder. 🤔 Cave ins are no joke, especially if the substrate is not stable. Would have cable going into the hole and a large animal coming out of the hole disturbing the sides and the lip.
I won’t lie it’s daunting. But we build skyscrapers it could be done.
Also not mentioned but you would need some sort of alarm. If something falls into the pit you would want notification. A trail camera that notifies you through cell service, or it needs to be manned with a blind close by and watched 24/7.