I finally had a chance to fold Jeremy Shafer's Super Boomerang and Boomerang airplane.
Pam Miike filmed this (so "blame" her for the timing on the slo-mo button on my Casio high speed Exilim EX-FC 150). The reason why I'm kneeling is because the boomerang kept hitting the low ceiling.
Shafer makes it look so easy; I was hoping that you could throw it any which way, and they'd still come back to you. The reality is, like my glider, it takes practice to get a feel for throwing them.