Originally Posted by warbonnetguy
a large circular reinforcement patch would work well too. sew a circular patch say 6-8" in diameter to the underside of the tarp. it needs to be thick enough fabric. 3 layers of regular sil make a good reinforcement patch, then just sew a pull tab on the otherside of the tarp inside the circular stitching/seam. a 1" ggr pull tab with a box stitch is what i have used, sew it centered left to right, but lower than center up and down wise, 2/3 of the way down or so. you can sew the circular patch on the outside if you want but it looks better cosmetic wise if it is on the underside, shouldn't make any difference strength wise. strength comes from the strength of the patch (thickness) and it's diameter (how large of an area it disperses the force from the pull tab to) if it isn't thick enough, the force on the pull tab can damage the patch, if the circle isn't big enough, the circular stitching itself can recieve too much force.
this is true. i used circle reinforcements on my first tarp w/ pull outs, a ray way tarp.
one thing like about the full length seam is that w/ the circle, you make a commitment to those particular spots for the pull outs,
but w/ the seam you will only be committed to the location "up & down", from top to bottom.
you can still make changes w/ little trouble about pull out locations from end to end.