With whole pork tenderloins, I usually marinade it overnight, what ever you like, I have tried several diff. ones, they are all great. I pull it out of the marinade, rub it good with cracked pepper, and garlic powder. Put it on a hot grill on low until internal temp reaches about 175 turning it every 10 min. or so. I then brush on a good honey bbq sauce, and let it marbleize, and then pull it off and serve with mashed potatoes skins left on, some green beans, and some biscuits.
Wife puts it in the crock pot, lots of seasonings. When it starts to fall apart, she shreds it, and makes BBQ pork sandwiches, mmmmmmmmmmmmmmmmmmmmmmmmmmmmmm