Ha! I got some great tips on one tour when I realized the boy waving around a weak flashlight was legally blind. He had a special monocular device for looking at things close-up. I had him stay up front with me and between stops I pointed him at some of my favorite small (but identical in proportion to the big ones) formations that he could see close-up with my flashlight. Imagine being the parents of a handicapped child out in the middle of nowhere on vacation, and having someone recognize his need and able to accomodate them by pointing him in a direction that lets him see exactly what everyone else on the tour is seeing--without being overly conspicuous to the rest of the tour--that was magical for the parents and the boy, but also for me. When you open that door, you have to answer questions, but if you also provide tools for further investigation you're helping everyone.

It's great work, if you can get it.

SRS