Whenever I had a spot that I was only able to get with a DE, I examined what the DE was doing and how it was engaging the beard. Then I simply used the straight to engage it the same way. Well, that's the trick right? For those sides of my neck, what I do is use my opposite hand. For my left side, I hold the razor with the right hand. Then I place the razor just about an inch below the jaw bone at the corner of my jaw and draw it from the top left down toward the center of the base of my neck just below the adams apple. Then I reverse for the other side. But that is a move designed for my hair growth. Maybe it will help you, maybe not. But whenever you have a tough area, think about what the DE is doing and then think about how you need to hold your razor and move it such that you're doing the same thing. I've been able to tackle all areas one way or another. The only spot I don't bother with is directly over the adams apple. The hair grow left to right there and its just too damn easy to cut myself trying to get it. That one little patch I accept as not BBS. It was tough with a DE and no easier with the SR.