I feel your pain,
@Kvent42 ! My tomatoes are always similarly affected -- the best defense I've found is to give them enough fertilizer that they kind of grow faster than the disease progression, at least for a while. And this year I grew some of my plants inside a 15x7' hoophouse, which has delayed the disease considerably.
Elaine, when would you suggest to apply the H2O2 drench -- before there is any disease apparent?
LOL -- these were some of my plants in October of 2014 (NOT caused by freezing)