hi
I say dutching because in FairBot, can be done  with one player, as in the image. 
according to the example in FairBot, I make a bet amount of € 6, to 1 favorite place to lay, 2 minutes before the race, to find  the best book value of over 30%, 
if I lose doubled to 12 €, 
if I lose I will return to 6 € and even when win again. 
I want to take is the value of book value, to increase more than 30% check image, the benefits are more than € 2.6 per game won. 
thank you