Possible Replacement for the GT-31?

As you all know, Locosys will be phasing out the GT-31 soon.  So what can replace the GT-31?

Peter Richterich has been testing the FlySight gps unit (which is developed for wing suiters and sky divers) and so far the results look promising!  If you have the time, check out his article about the FlySight 

http://boardsurfr.blogspot.com/2013/09/flysight-better-gps.html

EDIT: The developer of FlySight has shown interest in developing a unit for speedsailing!
http://www.seabreeze.com.au/forums/Windsurfing/Gps/GT-31-alternative-more-accurate-but/?page=-2#lastpost

-Kevin