Ounces to Grams.
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I dunno about y'all, but I firmly beleive that cheap is good. I added home made tarp tensioners to my SWT with Youngblood's directions only slightly modified using some bungee cord from my local outfitter for $0.20/ft, or about $2 total.
...and there came to be a day, all too soon, that I became aware that I could travel no more on my long journey. Though I did not arrive where I had planned, I believe that here is exactly where I am supposed to be...
“Light thinks it travels faster than anything but it is wrong. No matter how fast light travels, it finds the darkness has always got there first, and is waiting for it." -Terry Pratchett
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You can eleviate the UV problem with any decent car wax or maybe even Scotchgard with UV protection. I made a lot of 10 latex-tubed tensioners with Paracord I had lying around for $10 and I still have enought latex tubing to do pro'lly 10-12 more. What I like about using the tubing over the shock-cord method is there's less to get tangled with the tubing. I'm a DIY'er/handyman/rogue extraordinaire so if there's a way to do it reliably, cheaply, and without too much trouble I'll find it. McMaster Carr is your friend.
Neo, I've seen those but @3.29/each when you need 10 that becomes cost prohibitive and I'd rather make my own.
@ NCPatrick...Don't forget to take the hole punch along to create a "Sieve" in the tarp.