on the other hand, most pilots tend to waste a lot of time, and height establishing the glide
I was taught to teach 'on loss of power, give a good 6 on the trim wheel. This will give a pallpark glide speed in PA28 and C172'
So I pass this on. Seems to work. Takes 2 or 3 seconds, then eyes out to pick a field. Probably zero altitude loss. Disaster on an aircraft like the Rallye with a much higher-geared trim system, though, so type-specific.
TOO