Nice job. I've made two cat-cut tarps and love them.

If you haven't already done so (can't tell from the pictures), you may want to add some pockets at the tie outs to stuff the guy-lines into. I used some mosquito netting and it works great. On the open edge there is omnitape to be able to seal the pocket.
I do a quick 'hank' of the cord and fold it into the pocket. It keeps it neat and clean.



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