I think the lake you're talking about is Kincaid...it's about 20 miles from Williamstown. It's a great lake if you wanna catch bluegill or crappie that are under 5 inches long :D .
My buddy and I did pretty well at Williamstown yesterday. Caught a catfish and two bass that were over 2 pounds, and 45 or so crappie (only 12 or so over 9 inches, with the biggest being 14). Not a bad trip, considering our fish finder went out and we've never fished that lake before. People on skis/wakeboards/jetskis make warm-weather fishing there pretty much impossible. I think we were the only people out there fishing for crappie yesterday, which is always a plus!
I haven't got around to fishing Herrington or Taylorsville yet, but we've done pretty well on Williamstown and Guist Creek. Nice numbers from Corinth, Herrington and Boltz lake, but poor quality of fish (for us at least).