I am sure it has been asked but I couldn't find a thread on it. I will be using these 100% for park/urban, and got them so I don't destroy my 181 Pipe Cleaners from Urban, and so that I have a short park ski to use when I want it or don't want to use my PCs or LL2s. I would love to here from somebody that has played with the mount(especially on these short 170s) or at least how people like their current mount on them. Oh and these have a larger tip than tail(as in more rise, noticably farther into the ski). The "heaven" mark on them is roughly -1.75 of true(at least for both on my pair).