I judged three flights in the East region, and did a mini-BOS for all of them. I will first say that I don't know of a better way to do it, but some of the beers clearly suffered from the delay more than others. For instance, I had light hybrids as my last flight. One of our first beers was an absolutely outstanding Kolsch. Not just better than any homebrewed version I'd had before, but better than half of the commercial versions I've tried (and I was in Cologne for three days last October, right after Munich, right before Belgium, not that I'm bragging or anything
). When I had it in mini-BOS, I would estimate it had dropped from a 45 to a 35 level beer. It still got second, but a fresh bottle would have blown away the rest of the table. I don't worry about it, because it did move on, and in the second round there will
be a fresh bottle for mini-BOS (I can't imagine this beer NOT making mini-BOS).
The other flights I had this year, Scottish and Irish, and IPA, were much less susceptible to any issues. However,I have experienced some degradation in other comps whenever I get pale light beers.