We set up a 3/8" steel cable at 17' to practice and try to improve on the setup. One problem is anytime you have a rope going over the multi-stranded cable, most every rope, cord and even coated cables encountered significant friction as it rubbed on the many strands. We've been working on preventing rope breaks, which can really complicate the problem (knots going over cable can be a literal show stopper)
We've been refining a highly modified carabiner "Barney Bag"(tm) approach which has several advantages:
No / very low rope wear
2:1 Mechanical advantage
Very low friction at rope contact points.
1 Scout is consistently able to lift 100 lbs of food / gear by himself
Oops bag has 2:1 mechanical advantage and can be rigged to not have to be tied off
Easy connect / disconnect
Weight is about 1/4 that of Philmont ropes.
On the down side, some practice is required. About 5 minutes will do, but you do have to practice.
We're working to get to our final rev #5 before Philmont. Will try to get some pictures. The general concensus is it's much easier to use.
On the flip side, does anyone see a market for something like this, or is the market too small for cable based bear bagging?