OK... My recent trip brought about some new thoughts and some old ones that simply worked.
First... I am going back to the Figure 9 for the second anchor point. Its simple and just about fail proof. I am going to make this prusik a 4 wrap prusik.
Second... No more toggles. Not on the ends or for the tarp. Youll see why in the slideshow. The S biner option will remain.
Third... The first end will now have a Nite Ize Knot Bone as the attachment. This will be built into a fixed eye.
Enjoy. I hope to get this up on the site tonight.
The 2 line version will be exactly the same other than having Knot Bones on each end of each line and no Figure 9. This method will also allow you to create the "V" dejoha illustrated.