inputs.text: works geek - software not intuitive take fiddling work figure took 30 minutes works pretty well data points track give time speed direction altitude uncertain accuracy since altitude usually showing 19 water think slightly better sailor hold breath several hours emailed tech support questions regarding correcting received no response nothing website discusses correcting shopped product looking something mark gps spots push button hoisting spinnaker race also velocitek prostart prostart 600 provide tracking data would purchase software 50 third party software 100 small dry bag keep pfd pocket next whistle device not water proof not even suggest sailingtracking purposes less 100 solution works well racing cruising taking pictures camera marking spot gps tracking device works well provided software files converted kml files imported publishedshared google earth battery life decent carries 24 hour charge lets charge night race toss pfd pocket morning race usually forget stuff like blue tooth transmitter not work ipod touch ipod touch not drivers recognize device high hopes case not surprised theory one could set gps receiver laptop laptop would stay safer boat environment gps would send data laptop bit complex want support go sailing