This is an issue I've really not had to deal with much, but here's my take on it....
I admire a newbie for wanting guidence, wanting to learn from someone more experienced, whatever....but I have much more respect for the newbies that just get out there and do it. Safety is always a concern that's voiced when the subject of new chasers going out on their own is raised, but anyone with half a brain has a "survival" element in their mind; i.e., they can sense danger and know when to back off. Chasing cannot be learned by following, period. You can chase with the most amazing veteran for 10 years, and you might pick up some stuff....but you'll never develop a true style unless you chase alone, or at least with others who are of equal experience (or inexperience).
Maybe to some "doing it yourself" isn't important compared to "being responsible and safe", but for me, I never wanted to be a "light" version of whatever veteran I chose to follow...I wanted to suceed or fail on my own terms, by my own decisions. I've had offers from big-name vets to do chases for years now, and I always say "yah that'd be cool" but never follow through.....what could I possibly bring to the table with a 25-30 year vet chaser that he/she doesn't already know??? I've never wanted to just "be along for the ride", which is what newbies who take guidence are...or what I'd be with a 25-year veteran....as angry as that may make some of you. Still the truth.
So naturally (getting back on topic) I discourage anyone from following us or whatever. As far as being liable, you can't control what another person does....if someone follows you and gets hurt, that's their problem.