We have been told that we have to use the cradle at least 80% of the time. My board crashes at least 5 times a day, requiring a restart. Friday, it crashed on my 4th stop and after my 6th stop, the screen displayed the message, "Map Nav is turned off." I did not use the cradle for the rest of the day and my board did not crash after that. Can I turn off Map Nav in the comm menu at the start of the day and be done with it??