I've replaced the stock suspension on my HH Backpacker with homemade whoopie slings. At first, I didn't have good luck with rigging the fly using the standard HH prusiks (they seemed to slip). After reading here about several people that do use the prusiks, I decided to setup and give it a try last weekend.
The prusiks are holding better, but they grip the amsteel right on the bury and make adjustment of the whoopies a problem. What did I do wrong?
Here's a pic:
Prusik fly attachment by g - s - h, on Flickr