Kiski River near Apollo

A ways farther downstream I've done well on smallies, rock bass, and channel cats. Also caught a few small walleye. I've never fished it that far up though.

I believe the roaring run watershed association stocks trout at some point in the spring.  You might want to google the name and see if they have a stocking schedule

River's Edge usually has a groupon a few times a year and thats a good way to save a few bucks on their floats.

Last year my girlfriend and I did the float from apollo to rivers edge and we had a great time.  Its an interesting trip in terms of landscape and safe as well.  I didnt bring my rod but it seemed like there were not a ton of super fishy areas along the way.

There are nice float trips with public launches in Saltsburg, Avonmore, Salina, Roaring Run, Apollo, Vandergrift and Leechburg. I know that won't be of much use to you if you only have an hour or so.  If fishing from shore only it might pay to spend a day hiking and scouting out deeper holes at the tail out of riffles. The bike trail runs from Roaring Run upstream to Salina. Using a bike will let you quickly reach some more secluded sections.
 
As for the river, it's typical river fishing with 90% of the fish in 10% of the water. Not uncommon to have multiple species days. Smallies, sauger, walleye, rock bass, channel cats and an occasional stocked trout. Loads of carp and huge balls of baitfish.