A 20" smallie is my equivalent of P&Y buck.
I like that. In MO a 20" is pushing about 7 or 8 years old I would guess? Big fish are as wise as deer in my book. Although I've caught numerous smallies over 20" and haven't shot a P&Y yet.
Fishing comes much more natuarally to me as far as where to cast, what to fish, how to fish it than trying to figure out a buck.