The computer model doesn't predict half times. You could expect that half the points of the game are scored each half, so it'd be half the spread.

It wouldn't be worth doing for for super 12s (due to lack of halves betting options) but it'd be interesting to record all 1st half and 2nd half scores to see if more points are scored in a certain half.

I might look at brumbies/brumbies, and brumbies 1st half -3, brumbies to score first etc, as long as they're at good odds. If you think a team will win, then you expect them to score more points, to have a better chance of scoring first, to have a better chance of winning both the first and second halves.

Might check these props out.