I believe , that the sportsbooks have a good idea, via their power ratings to know what the right side is , people watch those screens all the time public behavior seeing the fav being juiced, believing that is the "right side", just observations but I see lots of the time books will juice the fav, or some books may hold the line , when everyone else moves to" collect juice......' one of the lines managers at a pinny interview said "we manage lines not people" they also take positions from time to time on games, I have been watching these playoffs especially first halves and have seen the spread move as a fade....I think (no hard data to support this) based on empirical observation, a few years ago the( greek) -105/-115
moneyline moved up and down based on these moves....I figured out the linesman,s behavior close to gametime....(.college football) and had a very good season.....I agree it's a crapshoot, but a lot of it is trial and error and variance.....but keeping records you see things....for example why does bookmaker use -121 so often in their line history, why does the greek use -122 so often coincidence ?? do nott hink so I ask myself why ???