How to get bass and avoid sunnies?
 

None of this is scientific or guaranteed to work and the advice to go
up a size is the basic, sound, advice for this. As is often the case,
there are exceptions. In my personal experience I see the only
difference is in the fish's physical ability to eat the larger bugs
and, maybe, they're a bit afraid. One additional thing to try is to
fish over deeper water and to try more aggressive retrievals. Best
regards, TBone