I had almost given up huaraches. I had two pairs from Invisble shoes: 4mm Vibram Cherry DIY and 6 mm Connect.
I couldn´t find a tying method that worked for me (but didn´t try the criss-cross method mentioned above). I never felt really comfortable wearing these sandals. Until last week in Munich, when I met two guys with a slightly different take on huaraches:
http://www.nakedshoes.de/
They use a different Vibram sole which is way lighter than the heavy, dense Vibram cherry / Invisible connect soles. It is the Vibram Morflex sole, I guess (almost sure). It has minimal cushioning features and molds a little upwards over time.
Nakeshoes also use a different lacing material. Invisble Shoes laces are too thin, too rigid and too rough on the surface IMO which leads to rubbing, cutting into the skin and a very small margin for errors with the tying.
The nakeshoes´ laces are wider in diameter, the surface is smooth and the material is a little flexible. But not as rubber, think of a woven fabric that you can stretch up to a certain point where it cannot extend further. This works much better as a lacing for huaraches, at least for me. No cutting into the skin, no rubbing, the soles stay tight on the feet without being to tight. For the first time I can forget about the sandals while running
I wouldn´t suggest to order nakedshoes though because they are ridiculously expensive. I would suggest to buy the sole-material and find a good thread for the laces whith the features above. Only if you don´t become happy with Invisible shoes, though. I know that many people like them.
A last detail which helped me: Steven Sashen ties the thread coming from the toes straight on the middle of the foot. After watching something on youtube about Tarahumaras I noticed that they all wear the thread more in a diagonal style. This means you have to make the part between the toes and the first hole on the outer side of the foot pretty tight. I found this diagonal style much more convenient (no cutting between the 1st and 2nd toe anymore), even on the Invisible shoes, which found their way into the garbage-bin yesterday.