I think that the area that you have mapped near Three Valley Gap is a very good possibility. If Boychuk perceived engine trouble due to CI then the first good turn around place would be just where you have circled.
We have imagery for that area and should probably look at it again. The area around Three Valley Gap was one of the first overlays I looked at.
The imagery we are working with is from this area. I recognize the lakes and timber cuts from the imagery we are working with.
Right now we are on our third pass of this imagery, so hopefully everyone is looking really carefully.