I don't know that its good so much as stylized, but here's some footage of Peter and I sparring in 2006. We're both using heavy equipment, me the gangly dude with the quad-head flail and Peter is broadsword & board. We start sparring at about 14:41.
http://video.google.com/videoplay?docid=-6528896928389980674&ei=tAQeS532DZ_uqAPnx9iDDw&q=bhakdar&view=2#If you want to learn how to perform well with a flail, you just need to safely get to a close enough range with your opponent where it is nigh-impossible to block the wrap of the flail. Its range control and timing when to swing.