I think fish over 24 are uncommon, but, are there. I have seen the proof live and on this board. However, I have 8 plus years in on the bow and throw everything at em. This, I realize does not make me a pro. I do not do a lot of dry fly on the bow as I agree with the statements made, a streamer or nymph will take more big fish. If you target the biguns with a dry you can get them.
Probably landed a few dozen at the 24" range and only a few over this debatable mark. One brown was a measured 28". This is why I have my opinion.
BTW, I can vouch as I am sure 10 others can, that Russ is a great fisherman. I hate to say it, but, most people do not measure accurately at all! Sure some do, but.............
IMO