Free Flight SportBy Don DeLoach | ddeloach@comcast.netAs seen in the April 2025 issue of Model Aviation.ONE OF THE oldest forms of Free Flight (FF)—and for many, the most enjoyable—is Towline Gliders.The idea is simple: A 3- to 6-foot wingspan glider is launched from a 50-meter (164.04-foot) towline into circling free flight. Most FF Towline Gliders are lightweight (5 to 15 ounces) and tow up like a kite then float off the line gently into soaring flight.The National Free Flight Society (NFFS) sponsors a low-key competition event for Towline Gliders called Classic Towline. Models must be…