I have fished, camped, kayaked, canoed, hiked, rowed, swam, mountain biked, frisbee golfed, and some other things at Pinchot. It is a nice little State Park for only being 15-20 minutes from my home. Last September I rented a cabin there for a week and told my boss I was in upstate New York cause I didn't want to be bothered on vacation being so close to home.
There are some big boys in the lake but chances of catching them there increase at night. The lake gets a lot of pressure. Try fishing in the coves and openings in the weeds. The other year I rented a rustic cottage, went out at night, last night there, and caught a huge largemouth on a frog body and Gamagatsu hook on spin gear. I lost something really big on a spinnerbait. It bolted to my right and I all I heard was my drag go zzzzzzzzzzz and then snap went the 10 pound line, and my only spinnerbait.
I heard so many splashes that night all around me you wouldn't believe it but they all sounded like whoppers and I was hearing them within 1-3 seconds of each other, and sometimes simultaneously, at all different distances from way off to right next to the boat. So when I finally landed the big one I was like geez it's about time. There was nobody else on the lake because a huge storm chased them all off the lake just after sunset. It was an advantage camping there and being able to just shove off at the right time.
I will say good luck, because Pinchot can be tough during the day sometimes, not to mention very windy and you might spend some time removing weeds from your paddles or trolling motor.