"While most of the dangerous spots are well marked, the navigational buoys can be confusing."
No not really. Should you choose to follow "red right returning" you just need to know whether you are coming or going. A simple look at the chart and makes it pretty clear.
IMHO, the biggest challenge going through there is the lobster buoys.
Do did I hear that right that one of the ladies on the boat had totaled another boat on a prior charter? Scary who they let use people's boats.