This looks very promising. Just need to find out how to get some
http://www.woojinplastic.com/products/detail/391/category:clip-n-special-hook
http://www.woojinplastic.com/products/detail/391/category:clip-n-special-hook
That is the waveloc version of the G. Supposed to not slip under load.
If only they made them in a 1 inch version.