[Saikkonen]

"crunch"
reraise preflop both to gain info about button and to drive CO out or make him pay.You can then bet right into them on the flop. With only a call preflop I think you should bet anyway - if your opponents doesn't have a club at all they will have an easy fold or at least a hard decision and a bet here will drive out those with nothing at all. Try to find out and bet. Besides if one sits with a lonely higher club than yours you want to make him pay for his flushdraw.
If your are behind - well then this becomes expensive but with this hand you want to go showdown unless the others go totally bananas....