My understanding and what we did while doing our Q time...

If you have the bracelet and the box you should keep yourself (bracelet) within 30 feet of the box. So...when I paddleboarded around the boat, I took the box with me. Loved that they already had it in a waterproof bag that made it easy to strap to my board. You may go ashore, even though it is more than 30 feet from your boat but only in the approved places and should not mingle with other people. I honestly don't think anything would happen if you got further away from the box. It is my opinion that the tracker is there to deter people from breaking quarantine and as a tool to do contact tracing if you do end up testing positive.

You may not stop anywhere but at the approved quarantine spots.