Yeah... when I started working on this project, there wasn't ANT+ support for LabVIEW (or vice-versa), so VISA USB Raw was the only option (unless there was something else that I missed). I haven't looked at the code in years, nor can I now (I no longer have a LabVIEW license), but I did manage to successfully communicate with a Garmin Vector pedal with USB Raw (no dragons encountered). The message definition was provided by Dynastream, and I was only worried about a handful of messages, so it wasn't a big deal. If I were writing this program now, I would start with iNI's ANT+ Toolkit. There was no such thing in 2014...
