I have done some research on the past results for the last 5 years on Under/Over margin betting.

Under 391/2 points wins 65% of the matches.
Over 391/2 points wins 35% of the matches.

All I need now is a staking plan to maximize the pofit. Any suggestions?

Benny

Before I can consider a staking plan I would need to know:
1. The average odds of your winners.
2. The longest run of outs.
3. What overall level stakes profit the winners made because no staking plan over the long term can make selections that lose at level stakes return a profit.

I'll get back to you.

Benny

Sorry Benny, but the winning ratio is factored into the odds. Under 39.5 is always a fair bit shorter unless one of the teams is a red hot favourite. I'm not sure why they use 39.5 points because I would think a margin of 24.5 or 30.5 would provide a more even spread of results.