No money involved would need to be a rule. It just keeps things the way it was intended.
In Colorado "no money" is an imperative since it's illegal to guide without a license. Share the cost of food and fuel (maybe processing) is about where it begins and ends with me. In fact I don't like spending money and then having my guest reimburse me. I prefer for each to pay half at the point of sale.
I just like the company. I met my best hunting buddy on this forum in 2004. But he lives in AZ and I'm in CO. We get together for maybe one hunt each year.
KC