RE: free duck catalogs?
Definitely get the Cabela's catalog, both the master and the special waterfowl catalog. Get Bass Pro too just for some variety, they sometimes have something that Cabela's won't, but generally they aren't as good. You can get either by going to the websites and signing up. Mack's is the only other fairly large one, there are some regional stores that put out catalogs, but you'll have to search. Gander Mountain still has a catalog I'm pretty sure, but they offer pretty much the same stuff that Cabela's does.