Being an MBN comp guy (both judge and competitor) I've had probably as much whole
hog as anyone my age. I LOVE it. While I do enjoy it straight up (sans injections), a
good injection can add an wonderful flavor that actually enhances the flavor of the
hog (IMHO). My personal favorite is from the ham. That, or high on the shoulder...
Some of the hog guys use butter (whole lbs.) on it strategically placed where they can
get dry. The butter itself adds flavorings. It was judging whole hog a few years back and among the top 5+- entries one in particular stood out. They ended up getting 2nd only because they presented their hog with a sauce that wasn't particularly complimentary. However, the meat all by itself was outrageous good. Later I went and asked what they'd used and he told me it was Cajun Injector's Creole Butter, but only in small amounts. Since then I've tried it in mine and it does a great job of adding
wonderfully complimentary flavors, but also like he said, in SMALL amounts...