What's UCC Hamburg? I looked it up on RU-vid and found a video of people drilling really hard saying "Pfoom! pfoom!" when they hit. There's only one grandmaster who says "Pfoom!" when he hits (and he hits HARD) ...and that's Rene Latosa. He taught a lot of people in Germany back in the day. Also, you may know his student Emin Boztepe. If what you do comes from Latosa Escrima Concepts, you are learning the real shit. Latosa taught that you don't "Block"...you hit. If your hit is too late, you make it an "interference strike" ...which deflects your opponent's strike on the way in to hit. BTW Latosa was my teacher. Greetings from Arizona ...Your brother in "Pfoom!"