Don't forget to kill them!
On a serious note, the advice you've gotten is really all you need. Live bait (they're predators and much less likely to take cut bait or stink bait) and night time, they're almost exclusively nocturnal feeders. You can catch them at times during the day, esp every cloudy ones, but if you want success, fish at night.
Slow moving water, pools, rocks, all a plus. The PA state record was caught near Harrisburg.
