Agreed... he'll be in great company. Be sure to book a salmon fishing excursion for him (and you!) in Juneau, Sitka, Ketchikan or ISP(Hoonah) - wherever it fits in.
If he's anything like my 7 y/o daughter, shopping in non-locally owned jewelry stores isn't exactly his "thing"... You can find a list of charter boats that are 5-Star safety certified here: www.mxak.org/fivestar/5star.htm
Once you've picked a boat, you can contact the operator directly and see how "family/kid friendly" they are.
(Sorry to "hijack" the thread... word on the street here in Juneau is that the first of our big Spring King Salmon have been caught, and we're all getting rather excited about the fishing prospects this week! ;-)
Happy Alaska Travels!