I might be a bit ignorant to the biology of rhinos, but couldn't the horns be surgically removed or at least cut down to the "nub" to make them less or not desirable at all? They do it to goats, sheep, cows etc. I have seen and heard that they need them to protect themselves and fight, but really, the horns don't provide much in that respect.
Killing the poachers and pirates really is the only solution. Flinch
