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Improvised Sled Modification Step 1: Take small piece of cord, route through all grommets

Improvised Sled Modification Step 1: Take small piece of cord, route through all grommets Tie all the grommets together around the pull rope and tie off securely. Try to wrap all the tarp ends into this bundle and under the cord and knot. For reference call this the “ Grommet Knot ”.

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Improvised Sled Modification Step 1: Take small piece of cord, route through all grommets

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  1. Improvised Sled Modification Step 1: Take small piece of cord, route through all grommets Tie all the grommets together around the pull rope and tie off securely. Try to wrap all the tarp ends into this bundle and under the cord and knot. For reference call this the “Grommet Knot”

  2. Take a second cord. In the middle tie a 2 inch loop. Optimum knot is a butterfly but any will do. Take that cord, and below the “Grommet knot” wrap the cord securely at least 4-5 wraps, and tie securely. As with the Grommet Knot, try to fold any of the tarp under the loops and cord. The loop should be on top and the tie should be on the bottom. For reference call this the “Pull Knot”

  3. Take the regular prussic cord, put the prussic on the main haul line, then snap the end of the prussic into the loop of the “Pull Knot”. Once tension is on the main haul line adjust the tension on the prussic.

  4. Advantages to this system: • The grommets by themselves have limited strength depending on the tarp. By just looping through the grommets (with a carabineer for example) the end of the tarp is not secure, can catch things and cause drag. In pulling this system the stress over time on the grommets is often too much and parts of the system fail (grommets rip, tarp rips, etc…) • This recommended system works like a trash bag, where you tie a knot (monkey fist, etc…) on the end, then grab below the knot. The “Grommet Knot” is a stop and the “Pull Knot” below it tightens on the tarp creating a tight way of grabbing the whole tarp. It creates a much stronger pull point and keeps together in this case the end of the tarp creating a better cover and wrap for the patient. This also becomes a strong point for grabbing the whole tarp and system if needed. • This system could even be used with a plain tarp/sheet (no grommets) by actually tying a knot in the end and grabbing below it. (Although the main haul line would need to be left outside this knot). • - Greg Banner, gbanner@cox.net 17 March 2014 • National Ski Patrol, Eastern Division

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