"For mapping in Swedish lakes there is a project http://djupkarta.se/ to work together and create good depth maps. If you join the project, just upload the log files and get the finished map back!"

"Keep up the good work so that we can buy a kit from you soon!"

"Look at how it has been done before;
http://www.natrium42.com/halo/flight2/
Also on the site a very cool weather prognosis based Balloon Trajectory Forecast with google earth output
http://weather.uwyo.edu/polar/balloon_traj.html"