Actually, you can set them up a number of ways. I originally set it up like that but I now have them more square. There were a couple of line up options so depending how it goes on the water I may shift the angle again. The originals grav-d's were too square for me. This is how the LF straps look now which is probably more what you wanted.

This is the best way I found to do the straps. Screw them in like this and then twist them around after they are screwed in. Given the fact that you own a shop, you've probably worked this out a long time ago, I do straps once every couple of years.