You're confused. The line of sight (red line) depicted in my diagram is not the flight path of UPS902. It is a straight line connecting the Cargo Law camera and UPS902 at 17:15:44. Where UPS902 is located at 17:29:18 is irrelevent to the photo taken at 17:15:44.
"Also, you show a line of sight from the Sky2 chopper that crosses Catalina Island yet in the second to last pic you posted you can see Catalina well to the south of the line of sight."
No I don't. Neither the line I drew, nor the image taken from Sky2 depict a line of sight crossing Catalina Island. It is south (to the left) of the line of sight in all cases.
"There just isn't enough information to make those projections in any way accurate. You need exact positions for the helicopter and an exact time for the videotaping. When you start adding small errors up you end up with one big one. "
You do not need the exact location of the helicopter to determine its line of sight to the contrail. You need two distinct points to draw a line. Period. We have those. Nor do you need the exact time of the videotaping. The time is irrelevent to determining the line of sight to what Leyvas filmed. But since we know his line of sight to the contrail intersects the flight path of UPS902 at almost exactly the same point as the line of sight from the Cargo Law camera, I think we've backed up Leyvas' assessment that he was filming within a few minutes of 17:15.
No, you're confused. I was speaking of the line you drew in the pic at #3. Perhaps that wasn't supposed to be its flight path. In that case I don't know what that line represents.
You do not need the exact location of the helicopter to determine its line of sight to the contrail.
If you don't have the right position for the helicopter then you have no idea what direction the camera was pointed.
The time is irrelevent to determining the line of sight to what Leyvas filmed.
But it is relevant to what was out there at the time he taped.