I agree with that. And I would like to charge for those consultations, because that is what they are, and they should not be given for free. However, I am not a Certified Arborist, nor do I have a tree related degree, so I do not feel I can ethically charge a fee for my knowledge that way, though I am more qualified than most of the CAs in the area.
I’ve been considering taking the CA exam, I just haven’t because I don’t really have the time to keep it up, and don’t really need it, nobody in this area seems to care about it. I would be interested in some opinions though, as to whether I can ethically charge for my knowledge despite not having an official credential hanging on my wall.