Back stitching and overstitching Question

[Russ498]

I have only been working with weather since May of this year but have really jumped in with both feet. I just bought a cobra class for from Leather Machine Company. I can't say enough good things about the machine, Leather Machine Company or Cobra Steve.

 

 I've been making mostly holsters ,  knife sheaths and book covers.   I have been starting with three back stitches and over stitch three stitches at the end as well as back stitching another three stitches. Is it necessary to do that or is this overkill. There is a tremendous amount of thread at that juncture.    I've changed up a little bit and now backstitch three stitches the perimeter and end at the last stitch where I back stitch three stitches. This isn't quite as bad but it doesn't always look continuous. If I simply stitch forward and then over stitch three stitches, will that lock everything in?   Thanks for your help.