I' ve been using the Outfitter' s pack from Crooked Horn Outfitters for couple years now. It' s set up great for carrying a spotting scope and plenty of extra room for clothes, emergency gear etc. It' s made of saddle cloth so it' s quiet and it' s fairly narrow so as not to be grabbing every branch you pass. They cost a little over a hundred bucks, but I think they' re worth ever penny. I' ve got one of those over sized fanny packs with the shoulder straps, but the outfitters pack has a lot better waist band set up to put the weight on your hips. This really helps to minimize fatigue on your shoulders. The outfitters pack also expands or collapses so you can carry as much or as lillte crap as you want to