I have never fished Beaverdam, my buddy Scott went in the spring and said the same thing after we went to West Neck and caught some in June, he said the fish were twice as thick for a given length. At West Neck there were large schools of small shad and you could see the crappies and bass tearing through them. From checking stomach contents of lake fish it seems like they eat more scuds, grass shrimp and insects, which might mean they don't grow as fast or as big. It would be interesting to age compare fish of equal size from the different enviroments. The only lakes where we've seen shad of any numbers were Whitehurst and Little Creek and the crappies there can be real hard to find except during the spring spawn.