Hasty Webbing (Emergency) Harness Details
Structure: The Hasty Webbing Harness enables a temporary lifting harness seat to be constructed from a piece of webbing strapping.
Technique: Approximately twenty feet of webbing strap is required. Form a loop about six inches away from the center of the webbing and tuck the loop into the waistband. This means that the final knot will be tied above one hip. For security the Square (Reef) knot must be backed up with a pair of Half Hitches either side of the Square (Reef) knot.
Improvements: I am indebted to Boyd Hoyle for the following suggestions. Square knots are best avoided in safety applications. Use a Water Knot instead and still back it up with two Half Hitches either side. Also, tie it off in additional locations, e.g., round each leg and round the waist. This means that if one piece of the webbing is cut, the entire harness doesn't fail.
Alternative Harness: Alternative webbing harnesses can be found online such as the Swiss Seat which employs a similar principle.