I've done a bit of searching but I'm just not seeing a lot of information on this topic. I see it discussed briefly in passing in a few topics. I'm finally taking the leap and making my silnylon tarp. I used a rolled hem on the edges and flat-felled seam for combining sections. I'm just stumped when it comes to the tie-outs. There seems to be 4 different ways to go about it that I'm seeing:
1. Folded grosgrain tieout looped over edge and sewn (silnylon sandwiched between) with a box or similar pattern stitch. Not reinforced - this seems the most scary.
2. Section of grosgrain folded along edge to reinforce edge. Then GG tieout loop wrapped around sil and sandwiching the sil as above. The tie out is sewn to the sil AND the GG edging to try to put the pressure on the reinforced edge. From pics and video reviews I've seen, it seems the OGEE tarp is done this way?
3. All of the above but with a patch of silnylon down first over the area to thicken the strained area to further reinforce. See here:
He has a continuous gg edging but same concept.
4. Finally, this method: http://www.cookecustomsewing.com/tundratarp.htm
It's just a gg sewn along the egdge with a loop twisted in. This seems super simple and makes sense that the stress would be almost completely on the edging which seems ideal. I've seen this method used by some here before but never heard how the field tests went.
What's the recommended method? What did you use and why and has it worked (do you trust it in heavy winds)? I want this tarp to last me a long time but I don't want be excessive either. This is why I'm using a rolled hem instead of wrapping my entire tarp with grosgrain. From everything I've read, the rolled hem is good enough.
Pictures and field test reports are GREATLY appreciated. I hope to finish this sucker up tonight. Thanks!