Cool!

I'm pretty slack myself... maybe done half a dozen sketches (and not necessarily very good!

) in quite a few years observing, but I appreciate those with the patience to do it.
"To sketch is to see" is very true! When teaching people to learn to track, I get students to describe what they see to a fellow student... if they can convince someone else that what they see is "sign" then it probably is! The other exercise I get students to do is to describe a footprint (complete or partial) to someone else verbally, and the second person has to draw it. It works surprisingly well!
Al.