Spin-fishing right?
Powerbait (orange, Rainbow, and Chartreuse have always treated me well), is the way to go if you're bait fishing. Put it on a #10 single hook and put a small split shot up the line about a foot or so. Ball up just enough Powerbait to cover the hook and float it off the bottom.
As for spots, I don't mind being specific since this is a trout park after all
If you're bait fishing, park at the parking lot at the Low-water bridge, and walk upstream until you come to the mill dam. The plunge pool just below it doesn't get as much pressure as you would think, and if you get there at the buzzer you will catch trout. As a matter of fact, it usually fishes well through the day. If the water is up, try the slower water along the banks, and make sure you're fishing pretty close to the bottom. The spring branch (which is the first place you'll see when pulling into the park), fishes okay right after the buzzer, but it gets way too crowded for me. I'd reccommend staying away from it.
Also, the water in front of the campground can be pretty good. There are a lot of boulders in that section that create pocket water type fishing, and the eddies below each boulder will hold trout, especially in the morning. There are also a few deep pools along there that are good as well.
Good luck, and I hope this helps!