Just a comment about using rope in a semi-permanent installation like the wall project described. I wanted to install some "semi-permanent" anchors in some pine trees so I could leave a pull rope attached to pull up my climbing rope. I planned to use a tubular steel platform (just enough to hold the rope, not to sit on or anything like that, although, now that I think about it...hmmm..) and attach the platform with some 2 inch 4000 pound tie downs. Then I read on a hunting supply sight that it's not good to leave tree stands in trees for long periods because the tree animals, squirrels I presume, tend to chew through the nylon bands. That's scary!

So maybe that suggests that only _meta_l should be used???