Thanks.

I am using GPSar to view, but now I'm dumping the data out of it for the analysis due to the "effort" you mention.

I started out identifying and logging the key data points (beginning of tack, end of tack, etc.)and speed data manually. Once I got the data points I needed and the metrics down, I started to try to automate it. From the tracks I have studied so far, mathematically you can identify these points, then do the calculations to determine time on tack, speed, etc.

The end goal is to feed in the GPS data, supply a few required data points (race start time, etc.) and have the program automatically produce the analysis. Again, there are commercial programs out there, but I don't think the analysis is granular enough nor do they do a good job summarizing the data.