There was a woman, late 60's I'd say, who very slowly swam across to the island and then the full length of it. The lads had a guy on shore lashing sliotars towards them and trying to catch them!That's where I meant. Im never sure if it is Sandycove or summercove!
The swim out to the Island there is nice. I have never swam around it, but you see a lot of "serious" swimmers doing that.