While broken, I feel that SmashPass at least can be stopped to an extent. Pokemon with low defenses cannot really accept it so you can put something strong into play so that the opponent is pressured not to pass. You can also use Roar or Taunt on a predicted pass. Regardless, it is very strong, and definitely is something that deserves study and suspect.Maybe we should suspect Smash Pass. I remember it was banned in NU last year. With many Assault Vest receivers now on the rise, and with lesser Prankster users to mess up with the strategy, Shell Pass is not only viable, but also game-breaking in the tier. It allows poorly made teams to sweep much better ones.
The only two users of this strategy is Gorebyss and Huntail, but they have enough good points in a good typing and Defense to allow them to pull it off consistently and against many physical attackers in the tier.
If you want to see how painful SmashPass can wreck first hand, check out my team here: Sample Teams for Beginning in the NU Metagame
On another note lets ban Zangoose legit wtf is this thing. @_@