Like Mr. Powers says, it is more of a "controlled slack with some tension". Very similar effect to back-reeling LMB. Amazing how they stop "kicking and screaming" if you don't bully the fish...Many a LMB has been "led" around dock pilings on light line and brought to hand using the technique.

Not a Ditch pro, but...
 

Listen to the Ditch Wizards here, fellows. A lifetimes worth of info has been given up. Thanks guys.