We live in a town with a semi-pro hockey team and the arena is set up nicely
Full capacity is ~6000 and right now "covid capacity" is ~2500. They have the seats grouped into pods of 1, 2, 3, 4, 5, and 6, with each pod separated both horizontally and vertically from the others. You buy whatever size pod you need to seat your household. I'm in a pod of 3 at the center of a row of 16 seats; nobody else is on that row, and the rows above and below us have pods on the ends. All seats not in a designated pod are zip-tied closed to help enforce separation. Everyone is masked, the concessions are set up for spacing in the lines, which is helped by having reduced capacity. There are lots of hands free sanitizer stations around the concourses.
It's crazy to me that BYU and other institutions aren't also doing this. It probably helps that I live in the south in a very red state where the Governor is not into making authoritarian pronouncements; note that we do have a mask mandate, but otherwise it is business as usual. Most of the SEC schools are doing something similar.