Re: How do you measure SPEED on skates?

FNGuy wrote:

> Besides the timed average around a measured course, or a buddy on a bike 
> with an expensive speedo, how do you know how fast is fast?  I haven't seen 
> whiz-bang Doppler gizmos at the skate shops...

At times I use a handheld Garmin GPS (which I primilarly use
for sailing). The absolute positioning precision is only 5 to
10 meters, but the speed measurement is very precise, since
the error on positioning varies much slower than the time
needed to measure speed (typicaly 1 sec). Moreover, if you
later connect the gps to a computer, you get the log of your
skating session (positionning and speed).