In principle, the safety-helper (spotter) should know the trick itself, so that he recognizes the potential dangers in good time. Arrangements: First, the helper is informed, which trick to secure and what is expected of them. In principle, the helper is never directly in front of or behind the base so that no-one does stumble during a correction step. As soon as more than one correction step is necessary, the base breaks off, otherwise it forces the helper(s) to run along. A helper can not catch well, while he moves! An unintentionally rotating base also forces the helper to move. […]