I used to do this, makes for great hikes but 3.5 grams is a little intense. As I get old I just prefer an extra bounce to my step and rolls down my back. Best hike ever was on Dog mountain shroomin with my buddies, when we got to the snow pack I started to panic though because I couldnt see the trail and all I could think about was the news headlines for the night. I can only imagine what all the other hikers thought of us.