I like your description of the phases you go through Alex.
Just had a re-think on the sprint spacing and that does not workout right!

It would of been every 2000mtrs not 3200mtrs because the track where the QLD titles were held at Hawthorne Park was a 400mtr track, plus it was 35yrs ago.
Like Alex said, don't try too win every sprint, just take placings for the first couple, then go for it for a couple and then see how everyone is looking and try for every second one. Of course this will also depend on the length of the race to, so customise your strategy to the length of the race and make people hurt.
Foo