It is too vague, sorry.
Bluffing is way too marginal to be able to say how I'd do it without knowing the players tendencies.
However, I can say that most of the time I don't bluff here. I've got to get through 4 other players, two of them are the blinds. Any flop in the JT7 region is a problem against the two callers, and with two blinds that have completely random cards, any flop could hit them well (and they're in a position where a lot of people like to check-raise monster hands).
If I've got to get through 4 players, it's very rare that I bluff. I may semi-bluff, but still would consider just taking free cards and drawing in this spot.
Another thing to note is that I don't go into a hand planning to bluff very often, usually I go in with cards, maybe I'm setting up for a bluff but I do have cards. Maybe it's AT or JT or something like that (AT so I've got the A high to back me up, JTs because there are a lot of flops I'm going to be able to bluff with a lot of outs), but I'll have something.
It's very, very rare that I intend to bluff from the beginning. Don't get me wrong, you have to set up a bluff, not just throw out a bet, but you make up the story after the flop and figure out what would be consistent and convincing.
About the only circumstance where I plan to bluff is if I know someone else folds too easy, or has JJ/QQ, in which case I'll take the flop with my rubish hand, hope to spike two pair/trips or an A or K and take the pot away, but there it's dependent on a pre-flop raise from the guy with the big pocket pair to isolate it to heads up.