I've got a Hennessey Expedition Asym that I have had for a couple of years but have been a little hesistant to use it. I think I want to go with the webbing/ring setup. I am looking to purchase some webbing but am trying to decide how long to go with the webbing. I do some hiking in the North Cascades where there are some pretty big trees, so I am thinking I need 15 foot long straps. Does this seem like an overkill for hiking in Washington State? I don't want to be carrying excessive weight, but a few ounces are worth peace of mind in the backcountry for me.