Air powered antenna launchers?
Alan has the real deal USA style http://www.antennalaunchers.com/antlaunching.html
Sling Shot powered antenna launchers?
http://www.ezhang.com/ and yes he has a patent
Try the canadian boys garage special. yeah thats right a Hockey Puck
Snap on some Paracord and give it a whirl and launch this puppy up high into the trees and pull up that end fed or dipole and go make some contacts. Its very simple for a canadian boy to find a puck any where even the dollar store but it may be a challenge for the hams in Alabama or other non-hockey states. I am sure the Dollar Tree in Buffalo, NY will stock a Sabres version.