Ingredients for best lakes for a 7lb Largemouth

[RichS]

What do think are the prime attributes for a 7lb bass lake in Jersey? I've taken 2 bass that I didn't weigh, but were probably 7 or close to it. Both private water- one in Poconos and one Southern Catskills. So, aside from limited access, what do you think are the key ingredients? Forage? Regulations? Lakes with large volumes of water (Cong, Greenwood, "the reservoirs") put out big fish every year despite fishing pressure.