It's been awhile but unless it's changed you'll need a seasonal state park sticker or a daily pass to fish Carrol. Keep that in mind if you lake hop. This weekend the DNR will probably check the landings.

Carrol's a beautiful north woods lake and has a nice fishery. Check out the Hot Spots maps for this lake and the other ones you mentioned. Certainly no secrets out there. IMO try fishing for walleyes and you might catch a musky. Fishing with a jig and retail/chub minnow could result in more muskys than traditional gear this time of year. Have fun