Bassist,
Fly rod choice is obviously a matter pf personal preferance. If I had to choose between a 5wt and a 9wt I'd actually choose the 9 merely because I'd rather be overgunned than under. Take both rods out in the backyard and cast your favorite bass flies and see how they cast. Lotsa guys like small bass flies but my preferance for river smallies leans toward flies that are quite heavy and large. Although the average river smallie is about 10" and well matched to a 5wt, forget about throwing muskie flies with a 5wt. Even if you aren't interested in muskies, channel cats and carp are much more numerous than muskies and if the water is clear you should get shots at them and a 9WT would likely be better. Of course, if you're wade fishing, bring both in your car and you can always walk back and swap one for the other or cache one on the shoreline while fishing with the other - just be aware that much of the shoreline along the Juniata is poison ivy.
Fly rod choice is obviously a matter pf personal preferance. If I had to choose between a 5wt and a 9wt I'd actually choose the 9 merely because I'd rather be overgunned than under. Take both rods out in the backyard and cast your favorite bass flies and see how they cast. Lotsa guys like small bass flies but my preferance for river smallies leans toward flies that are quite heavy and large. Although the average river smallie is about 10" and well matched to a 5wt, forget about throwing muskie flies with a 5wt. Even if you aren't interested in muskies, channel cats and carp are much more numerous than muskies and if the water is clear you should get shots at them and a 9WT would likely be better. Of course, if you're wade fishing, bring both in your car and you can always walk back and swap one for the other or cache one on the shoreline while fishing with the other - just be aware that much of the shoreline along the Juniata is poison ivy.