Do You Have A New Strategy In Verifying GMB Pages?

In episode 253 of our weekly Hump Day Hangouts, one participant asked if Marco has a new strategy in verifying GMB pages.

The exact question was:

Marco, when you are testing a new strategy how do you verify it works? How do you ensure it is because of that new strategy? And how do you track results these days with Google showing everyone individualized search answers.