Here in Tampa, I can get WQAM day and night behind the splatter of WTBN.
Back in the 70s when I lived in New Jersey, I would try for WQAM at night down at our shore house because WFIL was easy to null out but I never was able to hear WQAM. Not with an ID anyway.
Had I known back then saltwater was so conductive, I would have tried at the beach midday. And I bet anything it could probably be heard along with WFIL and WGAI. I could kick myself for not thinking of trying back then.
At the time, I thought hearing WBZ at the shore was a good catch.
Once around sunset at the shore, I heard the old 790 WFUN Miami come in real well for a short time.
Then up in Bethlehem, Pa at college, once and only once, I heard WIOD on top of WIP.
If only we had a poster here who lives in New Jersey or out on long Island and could sometime see if WQAM can be heard daytime at the shore.
The low frequency and the location of their transmitter make it highly possible.