Sorry, I somehow missed this thread.
> After my last post about what I would do differently, I said I would have only had 3 tie-outs on the long side rather than my 4 that I have currently. I will say now after further testing that I will stick with the 4 from now on. It really makes it a more stable shelter.
Yep. More = stability. I would have done at least 3 (not incl corners) per side. I'll admit it's rare that I use them though - only if it's windy or I expect a storm. Though I pitch in a half pyramid so it's inherently more stable than an A frame IMHO. Since I don't use a bivy, I want more protection.
> I figure once this tarp is useless I will do some super non-scientific testing and see how small of tie-outs I can get away with.
I wouldn't wait that long as it should last for years, but as I said before you can get away with much smaller tieouts. By smaller I mean where the guyline actually ties on. You do want to distribute the forces along as much edge as possible. I did that buy just overlapping a 15/16" piece of tape perpendicular (i.e., along the edge or across the corner) to the 15/32" guy tape.
> After watching a video on this I see the kind of tape used that comes with the window film. In the video the maker also used velcro to stick to the polycro and then was able to sew grosgrain tieouts onto it.
Which video was that, Phillip? I know Bill Fornshell has said it was pretty tricky to sew it.
> So how much does this wonderful little contraption weigh?
Should be on the order of 6 oz, maybe 7 if the double-sided tape is heavy. My 7x10 piece weighs 4.4 oz. I know tape added at least several ounces to my original shelter, but D has used less than I needed for seams, edges and ridgelines.
> when you say running a ridge line under it, what does that mean?
He ran cord under the entire length of the shelter.