i agree! i submitted a bug report because i couldn't figure it out, and they replied with the proper instructions. maybe there should be a quest or something for that skill?
Yea, I didn't know that after I got the skill in beta so I gave up on it, feeling like it was useless (hence not getting it yet after reset). I expected to float or something awesome like that, then I heard it makes you bounce higher like spinach, but I could never figure out how to get it to make me bounce higher. So something explaining more would be good.