No 'e' in Dauphin's Stony 🙂
Start tying terrestrials for either. I have little luck on Stony outside of April-May, but perhaps others can give you better info. I have never gone into the bike/hike state game lands path a few miles up, but I do hear good things about it.
Clarks is in the heart of many from the area. It is beautiful, yet very close to HBG. You can fish in quiet seclusion or elbow-to-elbow. The biggest point is that you really can pull off the road anywhere along its stretch, park, and find trout where you set in. They are most numerous where stocked, but there is a sizable wild fishery there. I personally recommend closer to the Dehart dam than away from it, but that's based more on terrain preference and luck. Have sulphurs, cicada immitations, ants, tan caddis, and prince nymphs.