Well there is Pine Cliff park, Monocacy Park, and in Buckeystown if you go back Michael's Mill road there is a little park at the intersection with Rt. 80. The parking lot is close enough to take a canoe down. Sure there are others, will have to think about it for awhile
As far as trophy, thats just Marylands designation for catch and release areas. I have seen up to 18 in smallmouth, have heard but not seen up to 22 inch smallmouth. The largest musky was 40 inches.
The main forage for smallmouth is crayfish, so most baits mimic them deep in the pools.