What has worked for me is, if i am in early position, i will just limp in and maybe call a small raise. If i don't hit and there are overs on the board i raise to see if i can get everyone to fold but if anyone plays back at all i just stop and make decisions by pot odds
If i am in middle position i will raise or call a small raise and play the flop the same way as before.
If i am in late position i will raise if nobody is in the pot and try to steal the blinds. I really don't want a call. If someone has limped or raised i will re-raise to see where they stand if they re-raise ... that's the decision you have to make for your tournament. If you have the stack to withstand not hitting the flop and folding , then call. If you don't but the person is a fish then just call. If you think your beat and your close to the money, fold.
Folding is usually the best answer anyways. If your lost in the hand and have no idea what they have, then your own your own because you are already behind rather your jj's are better or not.