A Massachusetts Institute of Technology data scientist comes up with something similar to my minimum crowd plan.

“The big things are distancing practices,” such as asking fans to wear masks, Pentland said.

Other steps Pentland recommends include only filling up half the seats to maintain distancing (families can sit together) and checking fans’ temperature as they enter the stadium. Checking temperature “detects infection surprisingly well,” he said.

ESPN.com

It’s nice to see he thinks this will work with the stadium half full. I was cutting it down to one tenth full.