Getting a glider into the air is a community affair—assistance is required. While a launch can be carried out via a winch and a long cable or a car and a long cable, by far the most common method is to use an airplane and a 200-foot nylon rope to launch the sailplane.
That means that someone has to fly the tow plane—which just might mean that spending some weekend days yanking gliders into the sky would be more fun for you than going for $100 hamburgers. Plus, towing gliders is one of the very few types of flying a private pilot can legally do where someone else pays for the cost of the airplane. You get to do some pretty cool flying and it doesn’t cost you a cent. If you’ve got a commercial ticket and a second class medical, you can even get paid.