The difficulty is that you need to have a minimum number of fixed sums bet on the football and the coupon’s odds will change significantly.
Say you had put £10 on each side, betting £10 on a 1.5 win bet and £10 on a 2.5 win bet and the club’s odds were 1.6. That means that you would have won around £11.
However, in recent weeks the club’s odds have been steadily dropping to 1.32 so your odds have gone from 1.5 to 1.32 to 1.5 to 1.
Betting more on a shorter odds will see odds change much more so the situation may be the same but your winnings will be significantly less.
In your example, you could have made £14.36 if the odds had remained constant but as they went from 1.5 to 1.32, your winnings would be £2.36.
The way to keep betting if the odds change is to take a steady and small amount of risk to get a decent pot for each bet.
So if you have a ‘fixed sum bet’, say £10, and have £10 on each of the club’s two sides, you would need to bet £10 on both at odds of 1.5 to win £11.
If either side wins, you would win.
But if neither side wins, then you would need to throw your bets away.
You would need to bet on one of the sides to win both games or have a little bit of ‘misses’ – which means the team doesn’t win either game.
This means your fixed-sum bet is a tiny bit risky and you would need to invest £10 – your winnings on one bet – at odds of 1.5 to get £11.
In other words, with the first bet you would have to bet £11 at odds of 1.5 to win £11.
With the second you would need to bet on 1.5 to win 1.6.
This second bet would cost £10 at 1.5 to win 1.6.
This is essentially what you did in your example when you bet on both sides at odds of 1.5 to win.
If one of the sides won both games you would win the £10 in the first bet.
If both sides won neither game, you would have lost your £10 in the first bet.
At the other end of the risk spectrum you would need to put £9 at odds of 1.6 to get £11.
This is even riskier and you would need to place £9 at odds of 1.6 to win 1.6 to get your £11 from the second bet.
‘This example illustrates the need for assessing each situation and this can be very tricky and the odds may change,’ says William Hill spokesman Graham Sharpe.
‘What might seem like a win in one betting market may seem to be an unlikely outcome in another.’
If you are wondering if you are risking enough on a single football game, it can be tricky to calculate your risk.
Will your winning streak last more than one season? Sportsmail ran the numbers on five athletes who are five-year sporting trends when it comes to winning over a sustained period. Of the five, a sports economist suggested they would have been better off for betting on a series of smaller bets rather than a large amount for the latest season. Kevin De Bruyne Manchester City, £10.90 Kevin De Bruyne is the main man in the Manchester City attack and at the start of the season was at a juicy-looking 1/3 to win the Premier League title at his current odds of 1/6. But he is not the only player on a relatively long-term winning streak.