Hi!
I know it's not perfect but why I chose this side bet is that with a lay bet (and the avg odds are 1.7-1.8, my liability is not high. And I did play with real money for some time and I remained somewhat level, and my experience is not so bad here.
I have tried laying the tie, laying the pocket pair, laying natural draw, laying 9..... but when they do turn the other way round (as they seem to do so often in betfair once you start playing with real money, the loss I accumulate quickly decimates my bank. I once had 3 consecutive ties at lay odds of 10.6 !!!
I am considering playing the same game from 2 different accounts from 2 different machines whenever i feel the RNG is in cheat mode, with opposing bets till the pattern becomes manageable. the minimal loss i would accumulate here (since i would be betting on both sides) would be hardly noticeable and maybe, outwit the RNG. i could maybe risk only a slightly bigger amount on one side with hopes of arbitraging out in favor of both ends (just an idea... i will have to really understand and work on it.)