I was a patrol cop for 20 years. Rotations schedule all the time. Unwanted overtime, all the time. Never an option to sleep when it was foggy, snowing whatever. HAA is the easiest piece of night shifts ever. For me it’s simple. You rarely get scene calls almost every time you have a dozen or so clinics, airports or hospitals to go to at night. Plan all of those. Fuel the helicopter accordingly. set Up the radios, basically take the thinking too much out of the variables.
If it takes 20 mins to launch instead of 9. So be it. The patient will wait 2 hours at the hospital anyway.