Breast them out, cut them in to strips then marinade them over night. Get thick cut bacon and tooth picks. Roll a strip of duck/goose in to the bacon, once around so the bacon overlaps a bit, cut the bacon and shove a tooth pick through it and grill it until the bacon looks done.
Like eating candy. Make sure you soak the tooth picks in water for an hour or so otherwise they will burn to nothing.
If you like hot….get some jalapenos, cut them in half gut them out spread a litle cream cheese in the jalapeno then put a slice of meat on, wrap in bacon and grill. Duck poppers….even better than with just bacon.
With goose….put 4-6 breasts in a crock pot with enough chicken broth to cover them. Then add some onion, worsty sauce, garlic and/or whatever you like for seasoning . Cook for about 6-8 hours depending on the breast size. Once cooked pull them out and they will pretty much just fall apart but using a fork to pull it apart works great. Add some BBQ sauce and you have pulled goose sandwiches, these are wonderful too. Don’t add too much sauce up front or it will get soupy, you can always add more directly to your sandwich.
Cook time for duck breasts is far less so don’t mix duck and goose because the duck will get mushy and lose it’s texture. Goose works far better being a grainier meat than duck.
Good luck and shoot straight.