That's the second wrasse I have had from the Island, although the other one was on the Southern side casting out near the concrete cairn.
I think the gulley you are on about was just to the right of where we were fishing. There is another gulley on the Southern side too.
I managed to have a good look at the bottom of the gulley, to the right of where we were fishing at low water and definitely think that would produce on a float. There is a good bottom with crevices giving overhead cover (where food will collect) in the rock edges forming the gulley. On any HW there is a real good depth to the water there.
To be honest I have previously turned my nose up to the float but have decided to use this Summer, a lighter set up alongside the big rod for spinning and float fishing!