I flew my Fly'n King with a banner last week. Boy, did it work great. The tow point recommended by Bruce Tharp was perfect, right behind the trailing edge of the wing, centered on the fuselage. I made the banner according to the design on Allen Tong's website, worked the first time.
We also towed a TT Windstar glider with less than desirable results. It was very funny. I piloted the FK and my buddy flew the glider. All went well until the first turn, then the glider started to buck like a mad horse. All kinds of slack got in the line and it just got more pronounced the longer we flew. The glider is an old beater, so I did not care if it did not survive. We had a length of surgical tubing in the tow line, but it did not seem to help very much. My buddy cut it loose and glided back to safety. I dropped the tow line over the runway and landed without incident. On the second try another member showed up who had flown full scale tow planes and gliders. He got volunteered to pilot the glider. This flight was far worse than the first flight. The glider eventually bucked so hard it broke the rubber bands holding it's wing on. The wing fluttered to the ground unharmed while I towed the "lawn dart" fuse of the glider all over the friggin field. We were laughing so hard because the glider pilot was still able to "fly" the lawn dart from time to time, and the whole mess looked so funny with the fuse dragging 80 feet below the tow plane. I circled a few times trying to figure what to do next. Finally I dropped the tow line and glider in the tall soft grass on the far side of the runway. It stuck in the soft soil about four inches, totally unharmed.
Wish we had a film of that. I would entitle it, "When Good Planes Go Bad". We are still laughing at ourselves on this one. We might make several darts and create a competitive sport out of this.
Tom