I think that what the OP’s concern on this subject is old school. Back in the pioneer days of offshore shops they were offering outrageous bonus incentives. They’d give 100% bonuses on unlimited amounts. Many sharps were taking advantage playing both sides of a game circumventing the roll over requirement. There were many a thread where guy’s were getting their funds confiscated for that reason. Bet All Sports had numerous sister books and found same IP addresses betting both books and the punter didn’t realize they were betting via sister book. It was a total cluster muck. Not many books these days give bonuses over $500. Books these days don’t give a rats ass anymore. And the Bet All Sports guy’s got shut down and some did jail time.