All you really need is your Alaskan Social Shotgun.
Remington Model 870 Express (you don't need a WingMaster Magnum for this) with a legal-as-you-can-get-short shotgun slug barrel, and a magazine extension tube that doesn't stick past the end of the barrel. Be sure to get the slide-on round holder that slides over the stock. Holds 5 more rounds. Connect up a good fitting nylon sling. Insert 5 of your favorite sabo slugs in to the magzine and one in the chamber, and voila! Instant party, and you'd be surprised how nice everyone will be to you while on the river!

Parker - Just gotta figure out a nice rack for the Social Shotgun in The Kids boat. Hmmm, maybe you *shouldn't* have corked us.... (JK)