The difference in how the bike rides with higher tire pressure was immediately noticeable. Rolling resistance was much less at the cost of a harsher ride on Forbidden Drive's packed gravel surface.
My ride was cut short after only a little more than a mile, by two trees that had fallen across the trail. I didn't want to try climbing over them because there's a good chance that there would be poison ivy mixed in.
I wasn't ready to go home yet so after getting back to my truck I drove over to the Spring Mill train station and hopped onto the Schuykill River trail, where I had a pleasant ride. The section I was on is paved so compared with the packed gravel in Valley Green I was flying. The extra 15 PSI of course helped quite a bit and I seem to have got my seat adjusted correctly, too.