About three years ago, a known local bootfitter took the spoilers out of my Full Tilt Descendants before baking the liners after getting the footbeds done. Then later in that season in a bumps clinic at Winter Park, a well regarded instructor told me that I wasn't getting forward enough and put a bunch of trail maps behind my calf (sandwiched between the liner and the shell) and asked me to do few runs and see how it felt. I liked it that way and the instructor told me that my stance looked better. I completed that day's clinic and replaced the stack of trail maps with the spoilers and have been using them since that day. I guess the bootfitter and the instructor saw different things, but I preferred the recommendation of the instructor who was watching me ski.