ok - so here's how it went -
i arrive and find an 80ft white pine with the owner standing in front of it awaiting my arrival. He points out a hole about 20 or so feet up where bees are enter and exiting. I look all around to see if there are any other holes where bees are using. I see none. I set up the ladder and proceeded to set up the supports that the nuc box eventually would rest on. This was just to the right of the hole. I then make my 1/8 inch hardware cloth cone that's sticking through the piece of ply wood. I screw that over the hole then fill in all space between the tree and the ply wood. Several bees begin coming out of the hardware cloth cone hole and several returning bees start trying to find a way back in. At this point I set up the nuc box with two frames of eggs / larvae and three frames of completely undrawn bare pierco frames in it. I wish I had three frames of drawn comb but unfortunately I didn't so I set it up with what I had.
I watched the cone and nuc from the ground for a pretty good while and I didn't see any bees going into the nuc box although there were a couple hundred bees in the air circling around trying to get back into their tree home. I really hope they take up residency in the nuc with the eggs in it.
I tried to get the nuc box as close to the board holding the cone as possible and it was touching on the edge however the bees cannot just walk across like in the video of Iddee. Iddee trap out video - VERY GOOD!
I look forward to checking back in a week to 10 days to see if there are any bees coming out of the nuc box and if there are still bees exiting the cone.
I'm pretty happy all in all with the set up. Now I'll just wait and see what happens.