While I've never tried to eat a shoveler and can understand why those might not taste very good except in gumbo, I hear people say duck doesn't taste good when referring to any of the following:
-teal
-mallard
-wood duck
-gadwall
-widgeon
-whistlers
I'm convinced those people have no clue how to cook duck. All of those species are excellent. You can do the breasts as shown in the video above, slow-cook the legs, wings, etc. Fry up the heart, liver, and gizzards or use them in dirty rice. All are absolutely delicious.
Just don't overcook them.
I always point to this video from Anthony Bourdain's "No Reservations" where guys who duck hunt a lot claim they've never had wild duck that tasted good and all he did was simply salt, pepper, and sear medium-rare:
How to cook duck breasts