An outline--
Materials
I. Non-hardware
A. Rope
1. Running bowline
2. Alpine butterfly
3. Other knots (Figure 8, etc)
B. Other?
II. Hardware
A. Screwlinks
1. Oval
2. Delta
3. Pear
4. Shackles
B. Carabiners
1. Steel
2. Aluminum
3. Special (Revolver, etc)
C. Rings
1. Petzl Ring Open
2. Other
D. Pulleys
1. Pinto
2. Omni-block
3. Hitch Climber
4. Other
E. Friction savers
1. Ring & ring
2. Other
Methods
I. Setting
A. Cinching knots
B. Stopper knots
C. Connecting hardware
II. Retrieving
A. Friction reducers
B. Retrieval line
III. Misc
Discuss: pros/cons, loading, rescue, rope length, midline constuctible, remote setting, retrievability, friction, cost, weight, simplicity, adjustability, safety, etc.