I tried my DD Frontline for the first time last weekend and it was fantastically comfortable. My one problem was the amount of stretch in the webbing. I had done the Karabiner mod and was running a single length of webbing from the karabiner to the tree. Once I eventually got the tension right it was great but it took loads of attempts at sitting in it and then getting out and tightening it, then sitting again, then tightening again and so on. So, is this likely to be just due to it being new and the initial stretch in the webbing or is it because I am only running a single piece of webbing rather than taking 2 lengths round the tree and tied in a bow? What do other DD users think?