Dutching the scores.
This is Wikipedia's definition.
Dutching - In gambling, Dutching is sharing the risk of losing across a number of runners by backing more than one selection in a race or event. The process calculates the correct stake to place on each selection so that the return is the same if any of them.
That pretty much sums it up.
The idea of dutching has been around as long as betting itself but, now we have exchanges, we can reduce risk even further and increase the chance of profits even more.
When dutching a game I will almost always take on 5 Correct Scores from the start, sometimes less but rarely more. These scores will be decided by a number of factors but are primarily based on recent form and H2H's.
How the market is traded during the game varies depending on, if you're watching, your opinion of the game or available live stats.
Quite often it is possible to just let the trade/bets run and just take cover towards the end of the game. For example, you may have taken 1-0, 1-1, 2-0, 2-1, 3-0, the dog makes it 1-1 with 75 minutes played. At this point you can lay some off the 1-1, or not, and take cover on the 1-2. That way you can be sure, at the very least, you will have no loss.
Last night I dutched the Espanyol v Betis game, 0-0, 1-0, 1-1, 2-0, 2-1. It was 0-0 at HT, so I laid the 0-0 leaving a scratch on that and took cover on the 0-1, which would've secured a profit too. The game ended 1-0.
Problems occur when teams go a bit goal crazy and you can end up chasing your tail. Always be prepared for this and know which markets you will use, should this happen. If there is a CS2 market, there may not be much liquidity. Close attention needs to be paid to the larger .5 goal markets.
Staking wise, 10% of my bank is used on the first five scores with a view to losing no more than half of that. How much can be made is determined by what's on offer in the market.
Many of the software tools out there offer a dutching facility, my preferred one is Gruss.