Most of my flying at high-density altitudes has been in a turbo. When not in a turbo, I have been in a typical tricycle gear plane where I could do a full-power runup and lean for max power prior to takeoff. In our Q200's, we don't really do full power runups for risk of the tail coming up and risking a prop strike. So what is the best method to know you are leaning for max power at higher altitudes? It wouldn't always be feasible to tie down the tail and I am not comfortable leaning during the roll to find that answer out "live".