HP, look around your area, are there but a few natural spots, trees with hollow that could support a hive. Aspen are beautiful trees but the ones I have seen are not big enough to support a hive. Now, I know nothing about your area, so I am asking about suitable natural spots for a swarm? Are they plentiful or rare? That might tilt things to your advantage.
In North Arkansas there are many trees in a single acre that could support swarms, coon hollows, owl nest. Trees with hollows are everywhere, like 10-15 trees per acre with thousands of acres available in the Ozark hills. A swarm would have many natural choices where I live, like a thousand or more in a two mile radius. I do not try to trap swarms and have no experience, Capt has offered details for you, HP. Good luck.
Van