I see people writing about ripping crankbaits through weeds.  My question is this.  Do you quit on  a cast when the bait has weeds on it or keep fishing it.  I have generally quit but maybe that is not the right approach.

I always bring it in to check for weeds if it doesn't feel like it's running right. I don't use crankbaits too often though, so I'd like to know this as well! :-?

When it looses it's action because of the weeds , you are done. Reel it in and start over.

Sometimes I use a crank to locate weeds, especially fishing from shore with no electronics, and bringing some back is a good thing.  Then I use weedless baits.  As far as "ripping" off the weeds, You've got to use a bait that just skims the top of the weeds, not on that runs right into the heart of the slop.  I like baits with a quick rise.  When you feel the bait hang, stop reeling, and wait a half second.  Then pop the rod and wait again.  Continue the retrieve.  You sometimes get bit after the initial snap of the rod.

If you can feel that you hooked up on too many weeds and it has killed the action of the crankbait, you're done.

yeppp... then try a spinnerbait...