I ran into them this week while floating for smallies in my kayak downstream from the lake. The first one pounded a lipless crank bait. I was playing it near my yak, and I would say it was around 30 inches. It came off while I was fumbling for my camera. The smallies were hitting on little Pop-Rs and the next musky hit just as I was pulling the lure out of the water. I really didn't get to see it because it was so fast and it soaked me and my glasses and was gone. All I was left with was six inches of frayed PowerPro at the end of my rod tip--ferocious! The previous day on the Allegheny, I caught a northern that was just a bit smaller than the one I had on Shenango. That one came on a spinner bait.
I think I might carry a dedicated musky rod the next time I float that section of the Shenango.
By the way, I'm glad I found this forum the other day. I live in central Ohio now, but I grew up in the Shenango Valley and still fish back there with an old high school buddy. I pretty much just fish rivers and streams for smallmouth from my kayak.