My son is a 13 1/2 year old Life Scout, and really enjoys backpacking. I'm an Assistant Scoutmaster, and the U/L influence in our troop. We consider ourselves a backpacking troop, as we make most of our monthly outtings a backcountry trip.
My son really "gets it" and is intent on going light. My question is, at what point do you make the change from hiking boots to trail runners? I can't imagine going back to boots myself, and want him to be able to realize the benefits of light weight foot wear. My concern is, of course, having him change too soon in his development and risking injury. Or am I making too much of it as long as his pack is sub 20lbs?