Excellent. Generosity is the best marketing strategy ever. I am super happy it is working for you.

What if:
You created a unique set of prints, ones you only give at the trailheads. Note on the back.
“To see the other images in the collection, see this page.”
Number or date the images, and give them a limited run.
Take only two or three different images in whatever quantity you think you need.
“Take a photo of yourself with my image and tag me on instagram for a chance to win a framed 16x20 image from my catalog.
Fill out the form at www.whatever for access to the catalog and be notified of my most recent treks and photos.
I share special moments, cool hikes, and lots of tips on how to photograph in the wilderness.”

Enjoy the trails.