I dont know anything about great pond. But it's been an off year due to the hot weather. Most of the big ones have been down deep for some time now.
I've been doing good with big in-lines, and big spinnerbaits. If there in shallow, there hitting anything moving fast, and making some commotion. Big rapalas also could be doing well. I've been going well with chartreuse and white. Also keeping the lure subsurface has been producing.
If you have the patients for it, i'm sure live bait in about 20-30' of water would produce well, especially around rock ledges, or near a weed bed.
Good luck!!