The only sidebets I really play are 8 and 9. I believe they have the highest probability of being rolled next to a 7. Every now and then, I'll bet on the hard numbers of the point. So if the point is 6... I'll bet on the hard six the entire time because there is a 1 and 3 chance that the next 6 rolled will be the hard 6. (combos of 5,1 4,2 and 3,3).