If you go to Hazel creek send me a PM and I'll tell you what I know and try to help you the best I can.
I catch most of my smallmouth at Wyco on shakyheads or topwater and a bunch on jerkbaits in the spring. There's some really big ones in there, it's just a matter of getting them to bite.
I wouldn't be surprised if there's some good smallmouth up shallow at Milford. I caught a 4 pounder there last year when it was pretty hot out in about 4' of water off the dam. From Thunderbird it's basically a decision of if you want to target smallies or largemouth. Turn right you're after largemouth, left it's smallmouth. I've caught them both all over the lake but that just seems where I catch most of both of them. The point to the north in the cove that the marina is in is usually a good spot for wipers but never done much for smallmouth. I've actually caught some of my best largemouth around the marina and in the scattered brushpiles in the marina cove, at least towards the south end of the lake. The State Park marina cove is usually really good for smallmouths and I've caught some solid keeper largemouth up to 18" out of there also. Seems I catch most of my largemouth on jigs or cranks and most of my smallmouth on shakyheads and soft plastics, spinnerbaits, jerkbaits, and topwater. If you can get an overcast day out there you can have a blast fishing a spinnerbait or trap.
I've caught 2 5 pound smallmouth and 1 4 pound smallmouth from Milford. 1 5 on a jerkbait off the boatramp in the state park marina cove, 1 5 on a trick worm and shakyhead in the furthest south corner of the dam that you're allowed to take a boat, the 4 was on a 3" Gulp minnow on a 1/8 jighead swimming it in the middle of the dam. This spring I lost a 4-4.5 pound smallmouth off a lone stump on a spinnerbait on a big mud flat on one of the first main lake points on the south side near the dam. If I could figure out how to draw on this google map images I'd mark the places I'm talking about so it wasn't quite so vague.
This was the best I could do with a map. The spots I marked are mostly smallmouth spots but I've also caught largemouth and spots at several of them. I didn't mark the dam, figured it's a pretty obvious spot for smallmouth.
http://www.google.com/mapmaker?gw=10&ll=39.079291,-96.919928&spn=0.012893,0.016479&z=16&vpid=1345156029616&t=h&lyt=large_map&hyaw=313.18182601138545