Raf, LOL on Captain Allan! I guess that we must have swapped stories in the past because that was where we always camped until the bear ran through our campsite 3 years ago. Now we camp further out in the bay on a smaller island.
Yes the water there is very unforgiving. We have been boating the same waters since 1990 and I always study the maps and then go through the area very slowly with the boat until I establish a safe boating route. If it is a sunny day you can see all of the shoals, but on a cloudy day always stick to the known route.
The only downside to our best fishing spot is that it is out in the open water, so we really have to pick the time to go there based on the weather. All of our inland spots are hit and miss. My Avatar is an in land spot that only produced Walleye once in 23 years. This place out in the bay produces nice Bass 100% of the time.