Re: Guides on public land?
It's prohibited in PA as well on SGLs. Page 18 of the rule book Sell, distribute, deliver, service, guide or rent any equipment, material or commodity or otherwise transact or engage in any commercial activity. Such activity is when a person directly or indirectly accepts consideration of value as compensation for the provision of goods or services, including transportation. Well at least that's the way I've always read it.
Smile its contagious. Its understood in all languages.