We don't have any plans to write a program like that at this time, but we document all of our output, so someone could write a program to convert it, just like someone did for GRT.
I'll also note that most GPS units that people connect to our products, such as the Garmin x96 and the Lowrance handhelds, can already have their tracks converted to kml via tools like www.gpsbabel.org. So you may already have the functionality you're looking for if you pull the tracks off your GPS.