When can a book pull this rule out and use it to their favour? For example, if you betting futures, must they inform you that it was a bad line soon after the wager was placed or can they say it was a "bad line" a month or two down the road? Could someone give me examples of when this rule is used and done so in a fair manner please.
Because of the unregulated nature of sports betting there is really no rule to which the books have to abide. Basically they can do what they want when they want. If a book is doing well, though, you are protected by the fact that if they do something outrageous, word will spread and they can lose a lot of business. Your only defense, therefore, is to go with a book that has a good reputation vis-a-vis having good lines, honoring the borderline cases (giving the player the benefit of the doubt) and responding quickly to any obvious errors.
