So I have the Spinntwin, 8 pegs and planned to use an OWARE double bivvy underneath it to accomodate one or two people. The OWare has a bug net that is above the 'left to right' full zip and can be raised off the face by three loops that are present. Raising of the face should make it a vertical window pane of mesh, not a horizontal one. Creating the vertical pane also creates room for your head and cover for the head!
My problem is where and how to hang them! The front of the tarp has a loop right at the tip of the beak – problem is that I am then sleeping right in the doorway, in fact if a vertical pane of mesh on the bivvy is desired, then I would be sleeping outside the tarp!
Do I run a cord front to back under the catenary curve?
Any other suggestions? I can't seem to make this 'right'!
Also – do those that use tarp and bivvy stake out the bivvy as well? (It has a silnylon base and will sit on a polycro ground sheet so will be sliding all over the place!) Or Do you run cord to the existing ground pegs that are supporting the tarp?
Ideas please. Thanks!

