The one Thing that might be useful in this hunt is to have a general regional idea of where The token is for each chapter. That way, someone who’s living say on the East Coast will not be working hard on the chapter corresponding to the West Coast solution. I don’t know if it’s possible to do that without giving too much away.
Of course, there are a lot of treasure hunts, for example breakfast tea and Bourbon, where the solution area is not tightly defined.
Random comment: You know what would dissuade me from wanting to win? The promise that someone will show up at my door with a big giant check. Seriously. We live in a tiny house with lots of pets and I don't even like it when the cable guy comes. Having someone knock on my door with a giant check is NOT an incentive for me. Also I'm always trying to figure out ways to keep one-time use things out of landfills like plastic bottles, etc. Having something like that which can't be recycled (I assume it's made out of some kind of plastic)...again, not an incentive. I wonder if he's flexible on things like that.