"Apply full rudder opposite to the direction of the yaw string" -- what
does that mean? What is the direction of the yaw string? If the loose
end of the yaw string is on the right side of the canopy, is the
direction of the yaw string to the right, or is it to the left?

I think you mean that if the loose end of the yaw string is on the right
side of canopy, you apply right rudder? Or the opposite of the normal rule?




The yaw string *always* points to the inside of a spin
(according the Reichmann and others) and modifying
the teaching to 'apply full rudder opposite to the
direction of the yaw string' would be a more certain
way of choosing the life rudder pedal rather than the
death one at low altitude