With great sadness I too feel it is time to call a halt on proceedings. Too many days at way under 200 miles over the last month make it unrealistic to carry on. Better to have a decent break, take stock, and decide whether a future attempt is something Steve can stomach.
If he does decide it is, he will have several advantages; shite luck since March should given him belief in his self resolve; methodology can be improved in the light of this experience; Tarzan has given insights into things that could be done better. In short, lessons can be learnt from an attempt that was brave to say the least but ultimately came to grief due to the March Moped.
It was a brave attempt but it was ultimately an amateur one - and I say that in the truest sense of the word, in that all helpers were willing and capable, but had other commitments to service. Kurt has a professional soigneur and is lucky that he doesn't have to pay her as he is married to her.
Regarding financing a future attempt, more must be done to keep donors in touch with the attempt. It's not acceptable however large or small the donation not to do so, people have enough call on their money these days. A monthly newsletter at the very least should be de rigeur.