I am a P2 user who makes great use of a Flytrex 3G. I just wondered, as the P3 is only available with the App (i.e. no 2.4Ghz, GoPro version), and that the App appears to be improved further over what it once was; what is the business model for Flytrex with regards to the Phantom Line? Is there any justification in having one with a P3, if all your data is getting logged on your device anyway ? Has anyone fitted one to a P3 and if so why?