I don't know if I'm too late and you've shot already but I've done stateless doc sync sound stuff in a sort of funny way:
Recorder with a mic capturing the subject audio. At the same time I mount a lav mic onto the camera mag - since you're using a blimp/barney slip it in there. Let the recorder roll the entire duration of the shoot. The lav mounted on the mag will hear the purr of the camera rolling, meanwhile on a seperate track you have clean audio for the subject. Once you get the footage back it's easy to see on your two audio tracks when your camera was rolling. No need for a voice ID either - the bits of your recording that hear the camera purr will correspond exactly to the lengths of your shots, easy enough to organize.