I fished the Black once last year. You fared better than I did! Beautiful stretches of water, but I didn't get any. Perhaps it was just the day, or me, or both.
So much water to fish in VT, so little time, and you can't beat the pastoral scenery.
Have you fished any other streams up there? I usually go a couple times per year. The Mettawee is probably my favorite thus far.