How to jump cast easier?

Put jump and skill on 2 keys that you're quite familiar with. Mine is F (jump) D (triple throw).

Also, most keyboards can take in 3 key press at a time. Exception to these include, alt, ctrl and shift as if I remember right, they're on a different set of interupts, thus wont collide with your normal key presses. IMO, this helps chars that does not have inate jump cast ability more.