I laugh at anyone who says duck is not good. I fed a shot that day MERGANSER to one of the owners of one of the most prominent steak houses in Portland. He said it was some of the most delicious duck he had ever had and it was fantastic. My secret? 30 min brine and a 5 min rinse before drying sprinkle the outside with tonys after oiling, sear to crust on both sides with hottest grill possible. That's it. So a guy who deals in the highest end meat all day every day, ate a merganser breast with super minimal prep and said it was great and finished the whole thing. And this was a giant mergie, shot in clatskanie. Dragon bird.
I never leave skin on or try to get it crispy. By the time I get skin crispy, in my opinion the rest of the breast is overcooked, even using avacado oil at 500 degrees. I'd rather have a blackened crust and a breast that is truely rare in the middle.
I'll admit I grind most of of the birds I take, because I love pepperoni, sausage and burger and need that too. Grind some ducks (any species, as long as you brine it) with 25% bacon ends and grill a burger. Then come tell me how duck is terrible and eats like mud.
Brining is a big key, not over cooking is a big key. But duck is good. It isn't elk, but only elk is. And I have had plenty of overcooked, poorly seasoned, or poorly handled and cared for elk given to me. A ton of the game meat quality is determined by handling, care, temps, and cleanliness that goes into prep. You shot a rutty elk that took you 4 days to pack out in early september while it was 90? Yum. Pass the duck.