best way to join center rear

[alfrenovsky]

I looked at your other post (about cold weather and denim kilt). Are these sewing examples for denim? If you use denim, the lap joint works but leaves a bulge where the seam meets and usually the stitching is obvious.

Where the stiching is obvious I don't try to hide hit. I prefer a very contrasting and strong thread and I do a very visible (and hopefully neat) stitch. Making the stitches part of the decoration.