I don't understand why given the quality of your program that you would not include the time stamp with the "tracks" information offered by most all GPS devices. Etrax (Garmin) does not offer time stamps on waypoints (which I do not understand) but they do on the tracking points they record. It is a vital piece of information especially if you are taking photos and your camera does not have a GPS imbedded device. All you have to do is sync your camera's time with you GPS device's time and you know where you took all your pictures. This is quite a savings for you do not always know where you took a picture especially if you have many waypoints.

Best Wishes
Marshall