For many years the Head Raptor boots had a line embossed on the plastic (on the interior side) that said something like "trim here". You can use a pair of utility scissors to easily remove about 1/4" of the front cuff height. When you do that, it makes enough room to use the Double Power Booster directly against the liner tongue and without having to mess with getting it under the shell. That's how I setup almost all of my Raptors. I much preferred the feel of having the elasticized Booster connecting my lower leg movements to the rear spine of the boot.
