I agree with you, Frank, in that I would like to see the whole flight,
as logged. And that there is likely little time saved by having
Winscore "reduce" the file sizes. But, how badly is the climb rate
mis-calculated by dropping some data points? Unless the climb is just
a turn or two, where the climb rate could have been mostly the zoom
entrance, are you really losing much? What matters is bottom to top,
unless you are trying to show "He shifted over a bit here, and look
how much faster he went up." In that case, can you tell the shift
from the drift? And if what you are intersted in is bottom to top, if
you have the end points, do you lose anything by not having the
middle? I can see value in showing "Thermal started to drop off here,
so you should have left and not taken the next three turns." But,
even at 15 seconds between samples, this would still be apparent.
Less points around the turn will also damp out the zooms and dives
some pilots make when thermalling, thus actually giving you a better
indication of actual climb rate.

Note to scorers: Please look at Winscore and set it up so the zip
file it creates will go ahead and keep more of the data points. Help
keep Frank happy. And a lot of the rest of us, too. :-) Hard drive
space is cheap. Help me fill mine with flight files.

Steve Leonard
ZS