I have (had) a 33 gallon craftsman compressor also. It didn't keep up with a lot of the stuff I was doing, but my eventual solution was to scavenge a 60 gallon compressor tank to give me a cushion for the high demand times.
Its not a real great or permanent solution but it works. I used mine for 2 years but eventually burned the motor up from the usage. But since the compressor was 8 years old before it got the reserve tank, I figure it was worth it.
I will be buying the absolutely biggest, highest CFM, 175 PSI 2 stage compressor I can afford when I get around to replacing the old one. You CAN'T go too big...
BTW, I'll also never buy a direct-drive, oil-less compressor again. I like to be able to think while the compressor is running.