I throw them away early especially in freerolls, unless i get a cheap look. The only time to play these hard in my opinion is heads up or when it is close to the money and people are playing tight. You can tell what your up against to a point with a little raise. If your re-raised check opponents chip stack if its low you are probably beat unless its an all-in because opponent is about to be blinded out. If its a high stack im actually more likely to stay in. Probably different then most of you play them.