Yes, Skybet offer minimum lose to lay of £500 on all UK and Irish class 1 and class 2 races (such as Goodwood this week). William Hill have the same offer except it’s for all classes of race so a wider choice. I’m led to believe other bookies offer this but I’m not familiar which. Also, when you say most accounts are you also including lesser mainstream bookies like 888 and Unibet and others? I find these bookies are a bit slower to update prices when it’s 5 or 10 minutes before the start of a race so if you have the time, open up these bookies websites alongside an exchange and watch for the exchange lay price dropping before the bookie price drops. It’s time-critical but it can be done with your bonus restricted accounts.