Castrating a guy with a full size Burdizzo only takes less then two minutes. Hogtieing him might take time. You would need plenty of help. If the young guy has big testicles and thick spermatic cords it will take considerable effort to close the Burdizzo pincers. Have a guy pull downwards and backwards the stone so you can position the Burdizzo properly. Get him to press the spermatic cord in to a corner of the bag. Position the spermatic cords in a corner of the jaws of the Burdizzo at least two inches above the stone and close slowly gently checking that the spermatic cord is secured correctly. Tell your helper's to hold onto him tightly. Pull the Burdizzo downwards and backwards and using all your strength close the Burdizzo shut. When you hear a crunching sound he is done. It is a good idea to let the Burdizzo hang loosely between his thighs for a minute or so before removing it. Repeat the procedure on the other testicle.