It's OK to not have a smoker. I still love making shredded pork tacos in the Crock Pot, turns out awesome every time. Next time you bring home a small shoulder or ham from a little oinker use the Crock Pot, if you don't have one China Mart does and they're cheap. If your leg won't fit in the pot, then cut it at the joints so that it will fit (cook bone in). Once you know that your meat will fit in the pot season it with fajita seasoning, garlic powder, onion powder, cumen, paprika, & black pepper. Put meat in pot. Add enough chicken broth to cover meat, turn on low, & walk away. When the meat starts to fall off the bone (normally 6-8 hrs) remove it & de-bone. Remove almost all liquid but leave about 1/2" in the pot, leave some liquid in reserve. Shred meat with 2 forks and put back in pot on low. Add fajita seasoning, garlic powder, cumen, paprika to taste. Add just enough broth back to keep it moist and just a little bit in the bottom if needed (I like no more than 1/8"). Toast your torts and make some excellent pork tacos. If you have an HEB near by get the Mixla tortillas, they are awesome. Thank me later.
Oh, and while shredding with 2 forks...make sure you pick out anything undesirable like fat/tendons etc. I like to only put pure clean meat back in the pot. Makes a big difference with first timers or picky eaters especially.