I have used coated braids and they're fine, maybe you should look at Mantis as it's a little finer.
Then again, you shouldn't put all your eggs into one basket. If coated braids aren't working for you, are they working for others on the same venue? Maybe there's a case for trying flourocarbon hooklinks or stiff links, black Amnesia line even. Shorten the hooklength or lengthen it. Maybe the method of tying the hook is a problem.
There could be any one of 876 different ways of dealing with this.