Not the most practical approach, but damn would I love to see a swimming pool full of Anesthesia! I think you'd do a lot better if you built a massive homemade smartpot, pools are great, but not designed to sustain plants.
Be careful not to underestimate the climbing ability of the African Porcupine, they were getting inside the cages I built for my last guerrilla grow and causing havoc. Also, do baboons eat herb in your area? They don't in mine, probably would if it was seeded though, I find that unfortunately animals love pollinated ladies, caused me some serious distress in the past when some franklins picked all the seeds out of a trainwreck I was using for crosses