What can I say about the Mini Ninja... Such a great board, and one of my personal favorites.
I'm 72kg and ride 5'7 x 19'1/4 x 2 '5/16 With a lower rocker than my standard shortboards (MPD) for more drive and paddle power,
But It has a short board mid rail for quick response and hold in steep sucky sections of the wave.
This model has become hugely popular, and is now a staple in my small to wave board range.