Dora-9, Mike Sassin who designed the 'Spraymaster' told me that some owners did in fact remove the strakes for reasons I cannot remember. I can clearly remember the placard after my 'event' prohibiting spins in RSK but after all this time you've got me on when the strakes were fitted. I have an undated photo of me taxiying in at MB and yes it has strakes, they extend to a little hole that I think was used for lifting. As for the last poster the 'anti-spin' strakes are in a way, mis-named they were only there to stop you obtaining a mining permit, it was all about recovery, not spinning.