I had a bad run in with an Agave a few years ago. It resulted in a course of steroids and antibiotics as it seems I am allergic to the thorns somehow. I have one big blue Agave in front of my house that is easily avoided and kept as thornless as possible by pruning. The Agave in the pot beside my side entrance has been taunting me for years. Not very attractive, but I really did not want to grab a hold of it and pull it out. The handle broke off  the shovel , the evil thorned one was not budging and loppers weren’t working. Then, a thought occured to me, lightbulb over head! I just had a trailer hitch put on my Jeep. Note the small rope tied around the Agave.