Doesn’t she look lovely in Bray Harbour!
As Simon said, we went in August from Portland; tides don’t really matter, as you’re going ‘cross current’, and over 12 hrs or thereabouts, will tend to cancel each other out. I suppose that your more SW course may increase tidal effect, but overall it should still cancel out.
Important to ensure that you a) know when you’re in the TSS and b) cross at 90deg to the flow (N-S) – it can get quite busy out there!
Other than that, just a bigger version of Hayling to Wight really!!