The principal is the same as the ODI system except this time with three outcomes you need to use the spreadsheet to calculate the stakes.

Again, the toss can have a bearing, but now there is an extra complication - the weather.  In the build up to a test match the cricket forums are full of threads about the weather and the chances of it influencing the result.  There are armies of people who do nothing else other than back or lay the draw on the strength of the weather forecasts.  There's always someone on the forum claiming to live within 2 miles of the ground.  This can be highly amusing, it is rumoured that some TV cameramen are in on the scam and go to work with a small watering can to simulate rain for the viewers.  John Kettley, a formally respectable BBC weatherman now has his own private company which produces dodgy forecasts to influence the draw price.  My advice is to look at the threads for a laugh, but to ignore them completely as far as betting goes.  Just watch the money.

Anyway, back to the system.  What I do is wait until the toss has been made, let the market settle, and then back the favourite, at 1.02 * the current price.  I use a progressive staking plan described in my free spreadsheet At this point use the spreadsheet (formulas) to calculate your stake on the fav.  For example if your target return is £400 and the odds I want on the fav are 2.08, then the stake will be £186.92.  One slight complication is that the calculated odds will probably not be a decimal number that you can select in Betfair odds.  I just round up to the next selectable number using the place bets box on Betfair, but leave my stake as was calculated.  Now you have to wait until the match is in-play, normally as the first ball is bowled.  At this point jump in and get your bets in on the other two selections.  Note that the fav could be either team or the draw - this doesn't matter. 

Full details on my website Online Bookmakers