This isn't an answer to the original question, but we don't thaw our pork before smoking.
Our freezers run at -20F and would take a week to thaw in the fridge.
We cook a few hundred pounds a week to sell at the farmers market, and catering as pulled pork and ribs.
We don't trim either. Our butcher bones them out, and we have them leave plenty of fat cover.
If we want to apply rub, we do that after an hour or two on smoke, other wise we just season the meat after it is pulled. Ribs are easier to thaw, and get rub before going on.
Our customers love them.
Good Luck! Roger