Thats good for him but on a pedal hop I wouldnt advise you to crouch down to far as when your pedal kicking up to ledge the idea is to make sure you land in a good spot to then do a big pedal hop.
For a big pedal hop (static hop) you just need to do the first bit of the pedal hop then lean back , nearly touching your back wheel then drop the front to a 30 degree anglke or so then kick on forward . Then bring the handlebars to your chest then as you land take the impact . Look on trashzen theory to landing to learn this.
Hope this helps
Toby :)