Fished this last weekend, sorry for the late post. Overall we didn't catch that many, but we didn't fish that hard either. My wife loves trolling and driving the boat, so we stuck to that for the couple hours we had.
We trolled night crawlers on two hook harnesses. I tried all the usual colors gold, chartreuse, green, and red. By far red metallic was the best, it got every fish! I've run into that before on Holcombe, seems that red is a top color when the water is warm.
The fish we got were all in about 12 FOW and related to rocks or sunken timber. We managed a few nice crappie for the pan and landed a few walleye too, but all were slot fish. Its nice seeing so many 16.5-17.75 inch fish in the lake but it gets frustrating when that's all you catch and have to put them all back. I just wanted one for the grill.
The lake water is very warm and green. Seems to have most of the fish holding at the thermocline which I'm thinking is at about 10 foot (don't hold me to that).
I didn't get a chance to try, but I'm thinking cranks trolled would have worked just as well or better. I've had great luck on black/chartreuse flicker shad, the bummer is you can only get them at Mills F&F or you have to make them yourself. The black is the top 2/3 if you want to make your own. I like the smaller sizes, they only run about 5' down when casted but more like 8 or more when trolled 3 foot behind a bead chain sinker.
Good luck to everyone