I've drunk a year old Bigfoot and it's still intensely bitter. The hop character is surprisingly mellow considering they dry hop it on a bed of cascade for a number of months.
I got a bottle a few weeks ago in Shiels on the Drumcondra Road. I might be passing that way tonight and I'll check to see if it's in. Do you want me to grab you a bottle and pass it on in the B & C at some point? I'm long overdue a pint of Hooker.