Although is has been a few years and many anchoring ago since were were at Desolation we typically did as others have mentioned anchoring there. But.. I rarely had more than 3/1 rode/scope out. I imagine it can blow in those coves although we never experienced any difficult winds there, but the protection is pretty good too. Depending on how busy it was typically dictates the need to stern tie (If the center of Prideaux was full of boats). We didnt do Melanie cove as we wanted to be in the sun for more of the day.