For what it's worth, I've ALWAYS stored tanks full in everything from dirt bikes to sleds. Dump some junk in the fuel. Run it, choke it till you well....choke. Usually have Sta-bil, some Iso, and maybe some Sea foam in the fuel, fog and park. Never fogged the bikes. Usually store stuff in the garage, not outside though.
Really digging on that Mechanic in a bottle stuff. Gonna add that to the cocktail too.
I usually try to use discretion and restraint burning up the old fuel. Try. Doesn't ALWAYS happen, but I still try.
My Dad never even bothered with the fogging, just ran Sta-bil through the system for a whille, and parked everything. ONLY thing we ever had a problem with was one year with a machine with an old diaphragm carb. Diaphragm dried out over a summer the year it was stored outside. No sweat, just soaked the carb in a bucket of gas for a few days, put it back on, and it was good to go from that point on.
He never fogged our bikes either, and we never had a stitch of trouble with any of them.