Since my last POOGS incident (I've had 3 total, the first one in above post happened in July) I've had 2 more. All three times it has happened after the bike sat in the hot sun. It's summer in Texas, so it's always been in extreme HEAT; but the three POOGS incidents have happened only after sitting in GLARING SUN.
The first time, while sitting waiting for a tow for 2 hours, I had the gas cap open but still over tank hole. Over the first hour I tried starting the bike several times with a 5-10 minute wait between attempts with no result. In fact, almost completely discharged the battery I tried so many times.
The second time, after pushing the bike a mile I got to a hill (of course after pushing it up the hill!). I coasted down, popped the clutch, and it started right up. Stopped on the way home and filled the tank (all three times it happened at half a tank or little over).
The third time (today) I had just over half a tank. Started fine, got on the highway, drove about 1.5-2 miles and it started POOGSing. Had to pull over on the shoulder. Waited 5 mins with cap off and tried to start it. Nothing. Waited another 5 min with cap off and tried again. Nothing. Fortunately I was 1/2 block from a gas station. Pushed bike to it, filled it up and bike started right up. Drove it home another 9 miles with no problem.
I have not done your POOGS remedy procedure but I"m going to now. I really think my problem is the rubber vacuum valve inside the petcock (referenced above). If I have POOGS again after that then I will be certain that is the problem, so I'm going to eliminate the vent tube, vent holes and gas cap assembly first. Summer is ending here so that may do it, too. It's strange because I never had any problems with POOGS until I seafoamed the gas tank and my problem started the next day. Do you think it affected the rubber diaphram in the petcock to make it sticky? I know a lot of folks here swear by seafoam, that's why I did it. Kinda wished I hadn't.
In the meantime I will carry a 60cc catheter tip syringe to apply a vacuum to the petcock if it happens again. I'm convinced if I had one today I could have fired it up. My brake bleeder vacuum pump is what fixed it the first time. Don't know really though, not a mechanic, just trying to learn here like many others...