Weekend Railfanning. Where is the BESTAction??

I have weekends off from now until Easter. I want to get out on Saturdays and some Sundays to do some video/railfanning. Where/when is the action hottest on weekends from Easton to Harrisburg and Reading to Philly? I know NS is so unpredictable. I waited over hour and half between 9:25 and after 11 am yesterday in Bloomsbury NJ and saw NOTHING.During the CR era that was the time when you'd catch at least half dozen trains. With NS you never know.

Rockville Bridge. The Bridgeview B&B has a great angle and the owner doesn't mind non customers using the deck, just check in at the office saying you'll be out there.