Have a good weekends sailing, can't be with you unfortunately.
 
250 - 270 degrees:- The wind is now coming to you having been squeezed through the Solent, and is quite stable. 
270 degrees:- With the wind parallel to the shoreline, it pays to stay left-of-middle for better breezes, as there will be less wind within half a mile of the shore in the divergence zone.
270 - 340 degrees:- The shifts are back again, now that the wind is coming off the land. Left-of-middle normally pays for the wind as there tends to be slightly less wind near the shore in the divergence zone.
Sea Breeze

Going by the forecast, tomorrow should be a good spectator sport.