 Special offers may include; cashback on specific events, enhanced odds and comp points.To profit from these specials, a skilled bettor will use betting, laying and dutching to create their own book on an event that may not guarantee profit but will still put the odds in their favour instead of the bookmaker(s) involved.Sign up bonuses are also classed as special offers and can be used in a similar way to lock in a profit regardless of the result using the principles of matched betting.