South westerly would be cross on and sailable but not great, heading to Branksome Dene would give you sideshore and would probably be better forwindsurifng if there's enough windswell to produce a wave. Right state of the tide and there should be a wave at Boscombe, although it won't be epic. Southwesterly aside Windguru's currently showing sunday as westerly which would be sideshore and a better direction for all. I've not been down there for a while, but the local rag was saying that the reef's currently shut as some numpty drove their boat into it splitting one of the bags open and it needs repair. Prior to that it was shut as they'd decided it was dangerous due to the possibility of getting trapped in hollows that were spotted on the back of it. It breaks better by the pier most of the time, which wouldn't be that sailable due to the number of surfers. What ever state the reefs in at low tide it breaks the surface and bottoming out whilst sailing it needs to be watched out for. Heading to Southborne might be a better option or going a bit further and over to Kimmeridge. Hope thats helpful.