I'm not sure what to make of Glenn Kimball, but will keep an open mind.
Glenn Kimball is excellent at two things: digging up documentation and doing it in actual fieldwork, and verbal presentation. He also writes, but his gift is not there. I put him in the category of Velikovsky and Sitchin, i.e., digging up many facts of interest, but also making an exciting story out of as much of the fact as possible; he sounds excited, amazed, and astounded by his own findings, which is not a bad way to be.