Well, alot of what I have read on here would be considered torts. Electric fences are very expensive (I've installed them), and pitbulls are actually nice breeds with a very bad wrap. If you want a protective dog, get a Queensland Heeler or Austrailian Shepard. Paintballs are an okay idea, but I wouldn't put this much time and effort into a pot plant. What you can do is invest in motion activated lights, and "hunters cameras." Hunters cameras are camo cameras that you nail to trees (or other objects) and when game walks by it takes a picture, they work in day and night.
If torts were not a factor here... I would install barbed wire around the top of the fence, electric wire 4' off the ground, a moat with sharp sticks, .55cal sentry guns(j/k), and a small army of robot badgers with lazers taped to their ears. Have fun sleeping in a tent for pot!