The Blue Max II fun fly plane of the early 1980s was designed in the Parks College (St. Louis) wind tunnel by Jim Allen right before I started going to school there. I was so impressed with it's performance I built one from his plans right after I graduated. The tip plates, in combination with the very thick wing section, make for a very "groovy", responsive airplane. Especially at low speeds. Jim's roommate helped the late Ed Garcher at Midwest in developing the HotsII, which explains the appearance of tip plates on that airplane. Several wild versions of the Hots and Super Hots were tested out in the bean field behind the dorms on campus during the mid '80s. My favorite one was the .20 size version powered by an O.S. 25VF-DF. Had a thrust-to-weight ratio of what seemed like 2 to 1