Mathematically, there are only 2 ways of trading.

Dutch a market by Betting or Laying more than one runner, or Hedge the odds by Betting High and Laying Low on the same selection.

Another strategy is to Lay multiple bets.

Those 3 strategies are covered here, in a variety of different ways.

• Dutching. Bet several runners for an equal profit whichever wins, providing you hit the winner.
  Dutching can be done in several different ways.
• Hedging. Bet High, Lay Low for guaranteed profits.
  Get this right and you cannot lose.
  Probably the majority of traders try to Hedge their way to profit, rather than Dutching.
  5 different Hedging options are available here.
• Multiple Bets. Bookies love to Lay multiple bets.
  Now is your chance to copy what they do by Laying Trebles, Yankees, and Union Jack bets.
  An advantage here is that you get to choose the losers !

The spreadsheets described on this web page can be used to trade most sports.

All are suitable for trading in horse racing markets on Betfair or a similar betting exchange.