The great grand master of kickboxing and karate fighting Joe Lewis taught a lot of us "TRACO" = TRACY/CONNER circa 70s 80s guys how to do the side kick, many senior instructors at TRACO had been to one or more of his seminars, he was a legend at TRACO as one can imagine, I have a couple of personal photos of him from that era (one is a seminar I was lucky enough to attended another is when he visited my instructors dojo when he was younger = mid 70s ) . His side kick also removes the telegraph, but at the same time had the proper thrust. It's a shame he is no longer with us, even though I only meet him 1 time ( I was 19 yrs old ) he really impressed me. I take my side kick every where I go, I never know when I might need it.!!!!