There is another iphone app - Predictwind "Tracker". You can sign up at the yacht club level and get live tracking off the boats (for those willing to let the app upload data real time). The race can be viewed / broadcast on the line live or reviewed later.

They were farting around with this at my local club and I downloaded the app...I suspect that once they got into the actual fees and process that it was expensive and/or not casual. All I know is that the project got dropped like a wasp infested baked potato. You have to send them emails before you can talk about fees so I didn't dig into it.

http://www.predictwind.com/tracker/