How do u guys play overcards in Limit poker on the flop?

For example:
Lets say, someone raise from MP and gets 1 caller, u are in CO with AKos. So u 3 bet it. Both people in MP call.

Flop comes 4 7 10. (rainbow)
It goes check-check. You bet, and both players call you.

Turn is a J. Current board is 4 7 10 J (2 spades).
It goes check-check again. Do u bet again here? or check? Also if u bet again here.. and someone raises you? What do u do?

I usually abandon my semi-bluff on the turn when the bets get more expensive. If I'm up against a single player, I might try again, but in the situation you've discribed, I'm checking the turn and check or folding the river if it's not an A or a K. I may even fold if there is a lot of action and I put somebody on a str8...

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Trons
JstTrons
Toyotatruck

Depends on the players and the board texture, if the players will call down with any pocket pair then obviously you shouldn't bet on the turn. If they call down with any A, then you can value bet/semi-bluff the turn again.

If the players are decent then you might as well take your free card, you have outs to make a decent hand, also people like to slow play ALOT, so someone having a set would probably try and check raise you.