I'd always assumed, but never asked, that, on the assumption that Goole was my 22 hour control, if I had a stonking tailwind and arrived there 2 - 3 hours early, I'd ride a loop, say Goole - Selby - Eggborough - Goole to add 50km.
But, as it turned out, when we did have a stonking tailwind we just had a 90 minute sleep stop at Grantham services and another doze at Goole and rode our planned route.
There's usually a gathering at a 'spoons at 9am which encourages a 9am start time.
If you hail from the South and are brave enough, plan to ride 30km down to Howden and book a Hull Trains trip back to London. It cost me the princely sum of £12 a couple of years ago, although my progress into the wind from York to Howden after a 24 hour ride, a huge breakfast washed down with mild, was somewhat laboured.