Most of my knowledge of bobcat trapping comes from 2nd hand sources. I want that disclaimer out there so you don't take everything I say as the word of some expert bobcat trapper (never trapped one, being from NEIA).
If you have lots of fox in your area, I would use a beefed up number 2 CS. If not, a number 3 would probably a better option, but a number 3 would potentially cause serious injury to an incidental red fox. For sets, Bobcats can be taken in dirtholes and other sets commonly used for Coyotes. One main difference is that a bobcat relies more on eyesight and less on scent than canines, so eye appeal is more important than with coyote trapping. They also are apparently less resistant to "being squeezed" so you can use more blocking to direct the cat over your trap.
Good luck, maybe next time look for a trapping forum to post the question in, if you've ever seen the football posts around here, you know the lovely folks here at CF can be rather hard on opinions that differ from their own :wink: