Obeying the law complexity.....That's a completely different topic. You might check out Glenn H Reynolds, professor of law at university of Tennessee. He has written a number of articles regards compliance with todays administrative law requirements ,, and the inability to do so...
retraite above describes the added value of aux brakes well. But would you be true to the cause by never pulling your toad with the aux brake disconnected
The US coast guard has no requirement for radar application on boats under 50 feet BUT if you do have one on a boat under 50 feet it is a violation to be underway without it being in service. Test question on Captains 6 pax liscence