If I remember correctly, there was a whole section in AP129 (? I think - the precurser to AP3456, only in 2 vols not lots) to the 'Zurakowski Roll', explaining how it was done - and why it could only be done in the Meatbox. I also remember being shown how (not) to do it in one a long time ago - and discovered why it was nearly so useful to have a bang seat.