Yeah, I've been very lucky with bud rot, due to me alway admiring the girls, then I'll suddenly spot something that looks a bit suspicious, maybe it's some fuzzy white hairs, or maybe it's something that looks like fuzzy white hairs but is a bit of early fungus fuzz. Many times I've gone straight to it, then panicked and gone over the whole plant, but I always manage to catch the one spot where it starts. If you watch for the telltale fuzz, you'll never progress to actual bud rot. But if I see anything I always think it's best to go early rather than trying to squeeze an extra week, but rot can happen very fast.