Where would you place this piece?

Muf, that makes column 6 high which is disgusting.

 

Dear Amnesia, here is the move you didn't understood at the stunfest !

 

Synchro + rotate?

 

Yep. Autosynchro it so that on rotation the piece slides right. Best of all you can do it all during ARE. Just hold right, IRS it into play, then hit rotate a couple of times and it goes in.