Up there last month, brill part of the world, stopped at the same site your on.
Went in search of the wallabies on Inchlonaig island, not as deep as you think on the north west side of the island, about 25/30 meters out some large bolders which only appear when the water is lower or a swell.
Sure there are more place's that could damage a prop in such a large vast Loch.
Did the full length of the Loch and round most of the islands while there, your right about every body giving you a wave. Looks like you got the best week for the weather.