I have fished Fire lake for bass about 5 or 6 times. Always, caught a decent amount but most are pretty small in the 12-14 inch range. It is good lake to catch some Bluegill on a fly rod as well. I actually think the lake itself is kinda shallow, but I could be wrong.
I fished Praire Lake as a kid and once ran into my grade school gym teacher who had two bass over 6 lb's. Caught some nice Catfish as a kid and my dad had his pole and holder yanked out of the ground and into the lake. As a kid my neighbor lost pole as well. He actually cast his line and when he went to change hands the pole just dissapeared into the lake. Probably onc of funniest things I have seen fishing. I fished Praire Lake once a few years ago, but it is my understanding there is a leak in the lake and the water is quite low. It appeared that way when I tried it. My bet is there is still a decent amount of water, but it might be difficult to get to the actual water and it was getting bit overgrown where the water level use to be. The bonus is I bet no one fishes it...might be worth a look...if you can hack your way down to it. I am almost positive you can't take your boat out on that lake....even if you could find a way launch it.
I have fished the Slough maybe once years ago, but haven't been back recently. My old neighbor use to always fish for carp and catfish and catch some monsters. He mentioned catching some nice bass on occasion, but I do think it holds more rough fish. This was a long time ago so I don't know much about the area now, but it has crossed my mind from time to time.
Hope this helps a bit and sorry for rambling...kinda took me down memory lane a bit.