After my comments above, I really tried to enjoy the bit to Holbeach St Matthew, but without much success
Spalding to Crowland is still the best bit really.
I didn't really have the legs for this. I enjoyed the bit into the wind, almost all the way to King's Lynn, and was pleased to get there in four hours. Somewhere after Nordelph, I picked up another rider who was having a rough patch, and towed him for a bit. Then he towed me into Lynn as I tired. He was a resident, so offered me beans on toast at his flat
After that I was OK into Walpole Cross Keys, but after that he nursed me round, adding what must have been an hour to his time. Much appreciated if you're reading this. We finished just after lighting up time.
It really was rather unfair to do 75 miles into the wind, only to have it drop...
The day before, I had marshalled a sponsored walk, mostly on cycle paths. A four or five year old got round seven or eight miles on a balance bike, and was still grinning at the end. I reckon we've a future Audax rider there