IMHO, the bridge gauges and their accuracy has little to do with the problem. I'm afraid that like the increase in hire craft navigating after dark, boats aground, etc. can partly be put down to ignorance, to an unwillingness to read instructions (or listen to them and a wider attitude that can be summed up as 'don't ******G well tell ME what I can and can't do. All too prevalent in society today, and not just on the Broads I'm afraid. Yes, take a 'swipe of their credit card, just as is done when hiring a car or checking in to a hotel !