Here's the gist/synopsis: https://libertytreeblogs.blogspot.co...k-from-us.html
And a video (about 20 minutes) with a pretty good how-to of actually attaching components if you choose to jump in with both feet:
FWIW I use the "taped bricks" method Joe S described (that used to be the standard for GoRuck events). Just from my own experience a couple layers of duct tape has been sufficient to prevent significant wear to the GR1 and ALICE interiors. It also has the advantage (I think has been mentioned) that if a minor injury forces me to ditch weight to limp back, it's easy to replace.