Judges, when do you instruct your throwers to retire and why?
For example, throw and then retire soon after the bird hits the ground like at this field trial:
Or throw, stand motionless, and wait to retire when the working dog is released for the first mark?
From page 30 of the Field Trial Rules and Standard Procedure for Retrievers:
"Retired Guns and throwers should be concealed by a
blind that provides complete coverage, adequate space,
and natural camouflage to conceal the distinctive shape
of the blind ... No blinds shall be placed in the