I'm trying to work with what we have, as fact, using the tools available, to come up with a search area with confirmed points. I came up with a plan for myself and wanted to share in case in made sense to others.
The confirmed points we have are the R&R line, EAFOTS, H&S Nebula, the listening posts that CMDR Salomé including the CoR patrol zone, some clues in EDSM.
Today I was browsing EDSM, looking at the rift, H&S nebula, EAFOTS sector, and noticed the POI that were entered for the CoR. When clicking into the details, I noticed that they were entered by CMDR Salomé herself - and confirmed by the CoR that they have received a mission for a specific patrol route. They are to patrol watching for anything strange coming out of the rift, this gave me an idea. So this leads me to believe the patrol route is setup in a way that is to be sure to catch whatever it may be, coming back out of the rift, so in a way in lessens the searchable areas of the rift not much, but I think gives reason to prioritize certain areas over others.
I mocked this up to scale on a map and included key info below. I actually came up with 3 potential search areas for myself (and anyone looking for some kind of direction). Let me explain the map a bit first.... You can see the CoR official listening posts; Alpha and Beta on the map, their patrol route is the grey dotted line originating from each post. This leads me to believe the area can't be wider than this into the rift, so I extrapolated two lines 90 degrees off a straight line drawn between the patrol route. These are the red lines in the map below.
The additional lines you see off of the R&R line is just for me, I wanted to add an area to give some % error from the origination distance from close to Sol. The top line has a shallower angle to intersect with the edge of EAFOTS, the bottom line intersects with my original destination where I'm headed at the far end of the rift (I'm meeting the R&R line at the Outer Arm, then coming back in the search areas).
The green square is the EAFOTS sector
drawn to scale on the map. Giving some thought, I figure there are 3 potential search areas.
A, the green triangle area cut off by the R&R line. I feel this will be the primary search area, given the clear intersection with the R&R line. Personally if I wasn't already in the secondary area almost at the end of the rift, I'd be looking there. Next, secondary is area B, the pale yellow area on the far end of the rift. This was my original primary search area as I felt the old woman told us to cross the rift. I'm finishing what I want to do here before going to 'A.' Area C I did not want to count out because it fits the patrol zone... it's the entire area from the R&R line back to the red boarder line I drew.... that's pretty much it.
I'm going to hit B, then A, then fly aimlessly in C..... at least it's a plan!!
http://i.imgur.com/yijvf0s.png