I have always used the Hi-Mountain Garlic and Black pepper stuff. Tried a bunch of other flavors and brands, but every one always liked this the best. I would liberally coat, zip-lock, and let set over night. Never lasted very long.
I also soaked all my duck and goose meat over night in salt water after cleaning to draw all the blood out prior to doing anything with it.
As far as the family not liking duck or goose, try this.
Cut the breasts into about 1/2" strips and squirer onto shishcabob sticks. Season as you like, We use a bit of Lowreys and Montreal steak seasonings. Broil them in the oven for a few min's, turn them over for a few more min's. DO NOT OVER COOK. Needs to be pink in the middle. Tender goodness and even my boys gal that hated meat loved it. I would toss the leftovers into a zip-lock and take it to work the next day cold and it would be gone in minutes.
Something I wanted to try (haven't had any duck in a while) but used on some deer in the smoker for jerky and used on a steak or two. (my adjustments will be in ( ) )
1/2 c sea salt - ground
3/4 c brown sugar - Dried
1/2 c paprika (1/4)
3 tbs course ground pepper (2 1/2)
2 tbs garlic powder
4 tbs dried onion flakes (3)
1 tsp cayenne pepper
1 tsp celery seeds (0)
I would try this on duck or goose in a heart beat if I had some.
If you try this let me know how it went. I had a hard time getting people to eat duck and goose meat. Once you find what works, they will eat it up.