Jamaica Pond is supposed to be good, I had luck at Spot Pond last year. If you're gonna yak today be mindful of the wind, supposed to pick up pretty quickly and that can be a bit freaky if you're not expecting it.
for what it's worth, my buddy at work claims to have pulled 12 bass out of Spy this past Saturday, took his jon boat out with his buddy, said he hit the south side primarily
went out there yesterday morning, 3 perch and 2 little bass, not much else . . . would love to today but got work :/
personally, I'd either try Spy again, JP Pond, or Brookline Res, but I'm by no means an expert on where to find the honeyholes nearby