Only thumbed through it (not recently) and read his papers. I didn't buy the book. Can you cite page numbers and figures where he provides the kind of detailed quantitative test of a solar sail model that attempts to fit the trajectory data?

It's not in his papers that I saw--just more of a back-of-the-envelope calculation that just tried to get the order of magnitude right; and I didn't spot it in the book. But if I'm wrong and it's there (in one place or another) then I owe an apology.