How often do these checks occur?
randomly... very little to no chance being an sts hosp , relative little chance having an outboand flight plan the next three hours, more chances to enjoy the check at last flight of the day , even better chances when its obvious from the airport od dep that you operate close to the edge when it comes to range capability.
of course this applies only to commercial operators and major airports. being private on a small regional field- nobody cares as long nothing happens.
cheers !