Did it have good fat when you cleaned it? Did you leave some attached to the meat?
Biggest mistake when processing wild hogs is removing any fat that could be retained. The muscle has much less fat in it than store bought pork which makes it dryer and tougher. Oh let me revise that... the BIGGEST mistake is not removing all the glands, especially from older boars.
Best pork I have ever tasted was a 200Lb wild sow I shot during a HEAVY acorn year. The fat on the boneless porkchops was sweet and had a hint of nuttiness. It would have been a crime to cook them with anything but salt and pepper in a cast iron skillet. Mmmmmmmmmmm
For the leaner ones, any of your low/slow style recipes are good. When I smoke shoulders/hams I hit them hard with smoke for 1-2 hrs then wrap tightly in foil. This is a bit earlier than I do with store bought since it is leaner and will dry out faster. Any method of cooking regular pork will work, just keep in mind that wild stuff tends to be much leaner and a bit tougher and adjust your cooking times/temps/methods accordingly.
Enjoy !!