Liability issues make selling chaser passes a risk for organizers but I think it would be nice if folks either buy a ticket or make a contribution to the Friends or the 168 fund if they plan to chase. Friends members and RR employees that have worked hard on restoring and maintaining equipment have paid their dues already.
If you do chase, even though you are on public property and entitled to be there, please keep in mind that you are getting those shots only because a bunch of other people paid to make it happen. Be respectful and try not to obstruct their shots. The Friends fall trip from two years ago had some folks who were unable to get into the photo line at Cresco tank because it was too crowded. When a picture of the photo line was posted on the forum, I recognized several freeloaders who were in the photo line. That's just plain wrong!
Michael Allen