Part 1   Todd Crawford works on softening and discusses how,  the Hackamore teaches a horse to soften in the poll and the Snaffle teaches a horse to soften in the withers, explaining:

• What can teach a horse to lift the poll and the shoulder, to help the stop.
• Biggest mistake people make doing this exercise.
• What teaches a horse to push through the Hackamore.
• How long and how often to do this exercise.
• What to do when things aren't working.
• Why we have the Hackamore class and why back in the day they started all their horse's in the Hackamore.