Great day to test the GPS GT 31 for the first time! Together with Tomas van Zelst  and Sam Wennekes we popped over to the south side to pick up some nice gusts. This was my first time ever!  I felt a bit like a virgin but after reading my results ( for a 55 year old beerdrinking veteran  that is.... ) It was nice to do some speed-measuring, that's for sure.  I certainly have the hang of it now!  (Thanks to Hans Kr. and Arthur. who lured me into this rollercoasterride!!!)