For the last few years I have been one of several people running a tarp and knot workshop at the BushcraftUK summer Bush Moot. More than once I have wished that I had pictures that I could post of the knots that we demonstrate, to make it easier for people to go away and practice at home. The internet is absolutely loaded with knot web pages, bushcraft and tarp demos and many excellent Youtube videos, but despite searching, I couldn't find examples of all the exact knots I use.
Ideally all knots are tied to be quick release, meaning that they come apart when you want with just a tug on the free end, even after they have been worked on by wind and water.
Anchoring
Evenk Hitch on Youtube
Falconer's knot on Youtube
Tension
http://www.youtube.com/watch?v=zWhQfrepMFE&feature=related
More often these days I use a modified version of the Trucker's Hitch, originally shown to me on one of Mors Kochanski's courses. It needs more spare distance between trees, but only requires you to wrap around the tree one time, which I find easier and faster.
Attaching Tarp to Ridge
This method was shown to me by Jed Yarnold of TrueNorth Outdoors and allows for flexibility in how you set up your tarp, speed and efficiency for both erecting and packing up.
Short lengths of line, about 60cm, or double the distance from elbow to finger tips, are attached to the tarp ridge loops using a simple Lark's Head (
http://en.wikipedia.org/wiki/Cow_hitch). 3mm accessory cord works well, but in this case I have used 550 paracord with the cores removed, which allows it to flatten out and grip even better.
Guy Lines
I started using Excel Pro Racing Line, pre-stretched polyester sailing line (
http://www.sailboats.co.uk/Product~Marlow_2mm_Excel_Pro__30M_Mini_Spool_KF0149.html)
for guy lines a few years ago and have been very happy with it.
This was the only thing on here that I came up with almost by myself, having only see the very neat, but permanently installed, tubing tensioners used on Jacksrbetter tarps.
http://www.jacksrbetter.com/DSC00368 - web Small.JPG
which can be made like this:
http://www.tothewoods.net/HomemadeGearTarpTensioner2.html
Conclusion
So, there are the knots that we demo at the Bushmoot each year
I hope that this hasnt all been showing Grandma how to suck eggs. If anyone has photo series showing what they think would be a better, faster, easier or more secure way of doing any of these jobs, please post away
Cheers all.