Using a collar tie to pass through an opponent

You can do many things from this position...this is the second step in the arm fighting progression drill...after learning to fight through the arms and get into a collar tie position.. you can pass through and out of the dohyo, use it to get to someone's side, get them into an arm/head lock, use it to snap your opponent down and forcing them to step forward ...then you can trip or reap the leg.