d.merrell,
A lot depends on if it was actually a boar. If the animal in question was a very young boar(under 6 months) or a sow/guilt you will be happy with the finished product. I have done everything from a plain smoke to marinate, inject, rub and everything in between. My favorite is a medium pork shoulder rub then smoke at around 190 until 160 internal or until the meat shrinks about an inch up the leg bone. I use hickory mainly but persimmon is very good as well with wild hog. Then pull or slice and serve with a mild sauce.
Now if we are talking about a older, mature boar hog then all bets are off. Your nose will tip you off. My first advice is give it to a starving dog. If you insist on cooking, I have had the best, albeit limited, results with soaking long and hard in vinegar water, trimming off all, and I mean all, visible fat or striffen. Then injecting heavily with something stout, like cajun. Smoke with hickory or maybe cherry and cross your fingers.
Be advised that you will likely want to clean your smoker after smoking a true boar wild hog if you just smoke it without first treating the meat. I have had folks tell me they could taste it for several cooks afterwards until they cleaned and reseasoned the smoker.
Good luck