i think a good way to try to get the word out , especially to teach or educate people on root systems, because that is a true statement about the root systems, people do not know what they are looking at they buy a tree, they plant it. any way, a certified arborist is like a doctor in my book, you take an oath to preserve, protect and prune properly no spikes, you could organize an educational seminar for one day or two days out of the month and hold them at the library local, or at your local ag- center, i do alot of this and it also gets my company name out there, people call ask questions, then say can i hire you? it depends on how much time you have or if a person whats to make the time to do it. not everyone can but i think it is our responsibility to educate our clients.