I developed some randomization rules for sets about 6 weeks ago that has me c/r'ing and firing a PSB each about 5% of the time. I probably went 100k hands w/o c/r'ing a set, and I always wanted to bet 2/3's of the pot or less on the flop when I bet. So I "forced" some random non-typical lines into my game, just on principal. While I don't know the optimal amount to take these lines w/ sets, I know that never taking them makes me one of the "predictable regs" and that throwing in non-standard set lines HAS to be confusing for opponents, as long as 85% of the time I'm playing lines more likely to "get it all in."