I'd like to say that not everyone uses Bisharp, so if you're not using it, go ahead & Knock Off.
Nah, but seeing as how Shuckle's biggest niche is its unique dual hazards, you're definitely going to want some sort of anti-Rapid Spin and/or anti-Defog support. That said, Bisharp and physical Thundurus are the main Defog deterrents in OU right now, and both very commonly carry Knock Off.










