Yep to get the ski mounted at reccomended, you want to line up the midsole of your boot with the reccomended mount point on the ski. Midsoles on boots are marked in a few different ways, but are usually pretty easy to identify. The majority of boot manufacturers use a line (like shown below), but Full Tilt use an arrow I believe.
Check my blog for updates and reviews: http://aslansskiblog.blogspot.co.uk/
Joey -Formerly *III.JVD.III*
I post from mobile the majority of the time, so if the above is incomprehensible, I apologize.