Stay at least two metres from others. (No joining up boats together, no dock parties.)
Before leaving the dock it’s even more important than in normal times to ensure your boat is in good order. If you need emergency services save it for an emergency that could not be avoided.
Before you leave the dock ensure you have everything you need for your journey to reduce the number of times you need to stop for supplies. As with all shopping for supplies it is best to pay online or over the phone.
Double check the local covid safety rules before you moor up or go ashore. Of course, ideally you simply stay on your boat. It’s all about the continual challenge of financially supporting the local community whilst keeping everyone covid safe.
The Canada-US border is currently closed to non-essential traffic.