At times you can hear the waves at the corry from Crinan
, the waves at the grey dogs are very similar to the ones you get at the Mull of Kintyre, big standing waves for about 1/2 to 3/4 of a mile.
We got a doin' heading north past the mull in the summer with a westerly wind and spring tides, passed a 70' fishing boat and within about a minute could only see the top of his mast.
Similar type of water can be seen at Rathlin where I think 7 different tides run together and you can leave Ballycastle in flat calm weather and see the standing waves in the sound.
Andy