So I'm totally new to this forum, and a new hurache owner/user as of two days ago! So far, happy with what I have initially. Really looking forward to my first run in them this afternoon. Little background as well..runner for most my life, used to be stricken by knee/ feet pain issues and was and am sick of paying $100+ for footwear that wasn't helping me. Knew there was a better way, just didn't realize it had already been around for 1000  of years. Been running in VFF's for about a year and a half, and haven't found a distance yet that WASN'T comfortable running in those, and also injury free since then. Was completely honeslty drawn to these because of the price, and the materials used to make them…and the draw to the freeness of running in such minmal footwear (I also barefoot run, but no further than 5mi currently).

I AM having some issues  getting the tension/ tightness of my huraches figured out correctly, and was looking for some insight. So my questions are these:

1.  What IS the desired tension of the strap for your hurache? Should you be able to stick 1 (or more) fingers beneath the cord? Or should it be snug? 
2. The tightness I did have (which I thought was good) pinched my heel when I was walking up a hill yesterday. Do I have them adjusted incorrectly? (I had them tied in a variation of the slip on/ slip off method). 
3. I also noticed that going up hills, that my foot would slide a ways back on the sole of the hurache, giving a lot of extra material at the front of the shoe (and subsequently creating the pressure on my heel, I'm sure), and way to help keep my foot in place better? 

Looking forward to some input from the pros!! 

Thanks for the info, Steve. This is the style that I was using that was giving me quite a bit of pinching: 

I'll see about just finding a good sweet spot with the tying methods. I had my inaugurial run in them today! (About 4.5mi varying terrain and elevation change) and overall they were pretty good. I modified my tying style to more of a toga-style, but wrapped it around my heel twice (I'll take a pic and post), and that didn't give me any issues of pinching on the heel, but I did develop a couple hot spots on my left foot (one on my big toe, and one on the outside, about halfway back where the cord loops thru the sole). 

Picture hopefully to come shortly!