The tests are the specific responsibility of the judges, there is no ambiguity about judge’s discretion. Extended time on line with repetitive commands that are ignored by the dog does not make for a pleasing performance and robs precious time from other contestants who do not require such extended stays on line before calling for the birds. Multiply that extra 30-45 seconds per dog by the total entry number, that time lost could well be the difference in completing the stake in a timely fashion. A smooth effortless arrival on the line and a timely signaling for the birds implies a level of competence and training that is applicable to the final results. My answer to those who complain about the test(s) I put on is if you don’t like what I do when I judge, don’t enter. 😎Fine. Then the rules should state the handler has 15 seconds to send. Why should the rules be ambiguous? Especially since it's "competition".