Wanted to say thanks for all the input over the last year. We did 75 miles at Philmont over the last 12 days, and had a great time. Incredible views and great weather.
It was interesting that a couple of us on our trek (the BPL readers) had ULA Catalyst packs that weighed between 24 and 38 lbs depending upon food and water (up to 10 lbs food, up to 10 lbs water). That may not be ultralight by some standards, however the average trekker (Scouts and Adults) seemed to be carrying packs in the 40 - 65 lb range, with a few in the 70's.