We were using really, really old, pulled-apart-after-being-stuck-together Stubby Steve's pellets on a number 6 (or maybe 8 ???) circle hook, chummed with Aquamax pellets they way my adopted Grandpappy (George Glazener) taught me.
Bill: IMHO that is NOT an F1 hybrid, therefore I judge the earliest it might have hatched was 2010. And I think it has to be at least 5 years old. So, 5 to 7 years ???
DD: Results are due to really, really good genes. It worked for the fish, too.
"Live like you'll die tomorrow, but manage your grass like you'll live forever." -S. M. Stirling