On Thursday, October 6, 2016 at 7:56:45 PM UTC-7, Papa3 wrote:
On Tuesday, October 4, 2016 at 7:32:34 AM UTC-4, RR wrote:
I used to fly with a built in margin, I have now set it to 0. I think it was set to 800ft, so a normal pattern could be flown when I got home. Then on day my final glide got washed out (literally in the rain) and I really needed to know the correct arrival height. Was it 700ft reserve, 1000ft, what did 300 under glide realy mean? Now when I most needed the correct info, I was doing mental math. I switched that day.

RR

A good friend and tremendous wit, Tony Benson used to have a great saying.. "When the magic reads zero, I open the canopy and step out." His point was exactly yours Rick - trying to remember what margins/cushions etc he had set up sometimes required math at the least convenient times.

FWIW, I have the two glide amoebae (amoebas?) on the Clearnav set at 0 feet (Kellerman calls it the Crash Line) and 1,000 feet. So, I can instantly get a feel for where every known landable field sits relative to those two values.

P3

Ah...
"The Basic Benson", as Captain Staubach would call him.
Too bad neither are around to defend themselves.
When in doubt, resort to Look Out The Window Dot Com.
Jim