Opinion on Rolling Doubles?

[ShadowRoll]

The rolling doubles, as opposed to having only early/middle/late doubles, undoubtedly dilutes the double pools (although I'm sure that it increases the gross amount wagered on doubles, which the tracks must like), but I've sometimes found them useful to use as backups to my main plays.

Instead of backing up my main pick by playing it on the bottom of exactas, for example, I'll sometimes use my second pick in double bets paired with others in the next race. This is most useful for me in those situations where I think my main pick will either win or run out of the money.

If my second pick (the one I used in the double bets) wins the current race, then I've already got backup bets in play for the next race.