Pot and No Limit Poker goes into a little bit of detail on betting just outside of what your opponent thinks would be the correct pot odds to call. The authors put it in terms of knowing that you are actually killing some of your opponents outs in your hand without his knowledge, but this level of thinking will probably never apply at the $25 or $50 level. You can still apply this principle somewhat, in that rather than betting pot, bet a large amount that still makes it incorrect for your opponent to draw out to you (and therefore long run +EV for you, assuming you can accurately read his draw).