One more from the Seminar. Using the cane in a two-handed grip to fend off someone trying to grab you by the lapel or throat. This method was not specifically Bonafant, but was how to use a bar smash, combined with the Fairbairn rake across the midsection, or a thrust to the solar plexus (or gut, face, throat, etc.) to make your attackers day more than a touch miserable.
By the time the seminar was over, even with hand and wrist protection, most of the guys had sore/banged-up wrists and forearms.
Ah yes, a good time was had by all!