[Riot]

I dunno, Hoss - that 5 seconds includes the break, initial observation (1-3 seconds?) then decision to cancel, and then getting the bet successfully canceled. Tight timeline.

Definitely would have to be planned before time, with everything in place and someone set to hit the cancel button immediately if the gate break was unfavorable to the chosen horse

(how the heck would you see that break well enough? hard to see numbers/silks on TV's, and at the track, unless break right in front of grandstand?)

That's alot to pull off in a couple of seconds. That would involve someone with tote access placing his own bets, or obvious collusion between bettor/teller. If someone is doing it, they need to go to jail.

I did make $400 or so of wagers once (a huge $$ bet for me), and realized right after I made the bets that I had the wrong number horse - a definite no-way loser - keyed in all the bets. Panic time - I got the bets cancelled literally as the bell was ringing (at Kee). That had to show on the tote at the next click after horses were running.

We just don't know enough. When a whale can deliberately play past-post games and document problems, that's scary.

The question is still how extensive is the opportunity for true past posting (versus the changes that happen with final pool totalisation), and can past posting be reliably exploited and abused?

I suspect the first may be greater than we know, and the second less than we fear.

I could certainly be wrong.