User blog comment:Jimeee/Skyrim 1.9 beta update adds Legendary difficulty and raises level cap (Updated Apr 8th)/@comment-7605682-20130413190034/@comment-174.24.32.45-20130502051059

For leveling sneak there is a way to do so to 100 while you sleep. Go into Dragonsreach and find a spot that you can constantly 'walk' into without moving. Just to the right as you face Farengar's 'office' so-to-speak there is a pillar with a short self to the right of that; between the two is what I use. Start sneaking and back into your selected spot. Using a rubber band you can strap down the movement stick to make you continuously walk backwards. Go to sleep for the night (or day if you have that type of sleep schedual) and when you wake up you should have 100 sneak or very close to it. If you have a wireless controler it won't work (tested on xbox) as it will power off after some time.

This trick works even if you don't add any perks and even when starting at level 15.