Scrapwood Loom | Camera Strap

Not too long ago, I made a Scrapwood loom out of some 2 x 4's, dowels, and hangers.
http://www.instructables.com/id/Scrapwood-Loom/

The outcome of my first weave was a pair of subpar suspenders.
http://www.instructables.com/id/Scrapwood-Loom/step16/Finished-Product/

So here's my second try, this time a bit simpler.
A camera strap!

Step 1: Observe.

Measure the thickness of the original strap.

How many strands of warp yarn will you need?

Problem:
When photographers shoot without the strap around their neck.
They typically wrap the camera strap around their forearm.
This is cumbersome and twists the strap.