it’s really a bit pointless because the timing is in the 'eyes of the beholder" and i allowed the athlete to “commit” to an aggressive motion. I did this because I wanted the athletes to lean into the run before the clock started to encourage relaxation. A stricter timing means would quickly show the athlete that changing to a more abrupt start would yield better times over the short stuff and encourage tightness.
As long as I was consistent I could predict a block start E-time from there but others might get a much slower hand time.
In general, I would add .65 to equal an E-timed, block start over the distance, including the reaction time. That seemed to work pretty consistently for me and that’s why we were able to predict race times as often as we did.