Prince William Sound is a great place to hunt. I did it about a decade ago. Try Good Time Charters out of Whittier, capt. Dave. He's a big game 'transporter' and fishing guide. The nuanced difference is he can't guide you....he's just the transportation and drives the boat. Mix up the hunt with an afternoon of fishing or two. He can take you places where other hunters have been successful.
Last I checked, most of their spring hunts were booked, but you might be able to get on a wait list if there's cancellations and go in with a different group.
They also do drop hunts at a few FS cabins out there. Having a zodiac or canoe out there could be a great way to hunt and fish.