Nope! Generally I've trained my dog/s NOT to pick up dekes.
However, this year my new young gal, Sparky, swam through the dekes on a retrieve out on Aaron and caught a line on her leg. She swam out, about 100 yd.s trailing the deke, and when she caught/grabbed the duck and turned around, the line came untangled off her leg and stayed out there!
After leaving it out there awhile, and having one of my buddies, with higher waders than mine, try to walk out to retrieve it in the suck muck and turn back, I got Sparky and sent her out to "Fetch" the decoy.
She made two trips out, swam around it and came back.
I had her come back to me, took a decoy and commanded her to "fetch it", then took it from her and sent her back out there where she dutifully fetched the deke and brought it back to me.
My thinking on NOT having dogs fetch the decoys is similar to NOT training pointing dogs to "sit". (Where the dog, under duress, may sit on the command "whoa")
It's like throwing/fetching sticks which I never do either for the same reason...under duress of "having" to fetch something, if the dog goes out to retrieve, and it loses sight of the duck or the duck dives on it, chances are good that the dog will grab the nearest decoy and bring it back instead of the duck. :shocked: