I think I know what is going on, ....maybe, ..not sure. I was drawing in paint and then using freeware photo software to manipulate different parts of the tarp. But it keeps rounding off my angles to nearest degree. As I played with the cut away portions on the end, the angle on the backbone of my tarp was thrown futher and further off but cutting, rotating shapes and than mirror imaging them and pasting back together. None of the interior angles of any of my triangles were adding up. Very frustrating.
I went back to grid paper protractor and scale ruler.. The paper scale model worked out great.
I am confident I can layout the tarp correctly now. But I am having quite the trouble figuring out how to making curtained ends.
I don't know if I can express it properly in words. I will try and draw out what I am hoping to accomplish and maybe someone has some ideas.
This pic here is dropkicks original concept to shed weight off my tarp. Shows the curtain ends:
What I am wondering is how can I make them so that I can vary the height of my tarp pitch slightly, and still be able to close the curtains. At the same time, I need to keep tension as best as possible on the curtains so if I pitch low, they aren't flapping.
I realize the simplest answer is to keep pulling the bottom of the curtains towards the trees. But this will keep increasing my overall distance between trees considerably.