Hi moses. You did not say what kind of smoker you are using. That would help with the details. Like someone said, I prefer pecan for pork. If you can't find pellets, can you use chips? For more bark, try smoking fat side down (again depending on your type of smoker) and do not spritz. This will produce more bark. Bark = flavor! I have never injected so can't give an opinion on that. I hope you have time to experiment before the 'competition! Please keep us up to date!
Mike
Mike