I'd say Pittsburgh would definitely be worth a detour as it's about halfway between Youngstown and Ohiopyle. As you're into paddling, you could try kayaking on the city's Allegheny River (http://away.com/features/urban-kayaking-pittsburgh.html). Or catch a ballgame at the Pittsburgh Pirates' PNC Park, one of Away.com's top 10 baseball stadiums (http://away.com/features/top-ten-baseball-stadiums-3.html). Just off I-76 in the Pittsburgh 'burbs, Monroeville Mall offers some big-screen glitz (sort of) as this was where both the 1978 horror classic "Dawn of the Dead" and 2008's "Zack and Miri Make A [Pornographic Film]" were filmed! It doesn't get more glam than that, right?