Light Feet
"A pound on the foot equals five on the back." Here's a great post from the Chris Townsend Outdoors blog about how the weight of your boots affect your walking.…
Variable Friction
How to use the greatest feature of a rappel rack. Scott McCrea NSS#40839RL Out-of-control rappels, feeding rope, frustration, and exhaustion are possible results of improper rappel rack use. The friction…