Some bookies will have different offers for new and existing customers, which can help to give your accumulator a boost. Accumulators have become synonymous with the punter who dreams of a big win on a football or horse racing multiple and many betting sites offer great acca experiences.Īll punters want to maximise their returns for their accumulators on the likes of football or horse racing, which is why it’s important to know the best accumulator betting sites.