Sorry guys, dont get the definition of slip stroke even after watching the video.
Would u define a slip stroke like those wavvy filipino bicycle stroke like reyes or bustamante and a normal stroke like those snooker players with cueing parallel to the table ??
Just a little confused !!
Watch the grip hand on the first shot in this video.
https://www.youtube.com/watch?v=yxobcdPCYwE&feature=player_detailpage#t=545
The grip hand slides back on the cue on the backstroke instead of gripping the cue firmly.