"real" hawaiian pork doesn't have all that fruity glaze/pineapple sauce stuff. to do it the real way, dig a hole in the ground.
to simulate the real stuff you can easily do it in the oven overnight. it's tough to get right in a smoker but you can do it.
for the oven, get a couple of pork butts (boneless is fine, bone in is fine). score then rub with salt all over and pour about half a small bottle of liquid smoke on each and rub it in. wrap tightly in foil and throw it in an oven at about 250 for about four hours. turn off the oven then let it rest in there for another five or six hours. shred like pulled pork and serve (or reheat when you're ready to eat). I like to do this at night, starting around 8 pm. then turn the oven off right before bed. by morning when I wake up it's ready. the first couple of pieces go into an omelet for breakfast then the rest gets thrown into the fridge until the next night when I shred it, portion it then freeze it.
to serve, you can serve just the pig or do "kalua cabbage". reheat the chilled pork in a pot then throw in chopped cabbage (no extra liquid as the cabbage wilts and gives off a bunch of water). no added seasoning as the pork is already salty.
not quite as good as pig from an imu (the hole in the ground), but way easier.