In the early 1970's I was in high school in Southern California and my friends and I built and flew (or at least dreamed about) several of Jack Headley's glider designs from the pages of Don Dewey's late,.great "RC Modeler" magazine. Mr. Headley published many nice slope-soaring and thermal-soaring glider designs there, all with that disarmingly simple and fun style that he and Ken Willard and others did so well! To me he epitomized the relaxed vibe of Southern California slope-soaring at that time.