Where to buy the correctly-sized cube for the shark skill assessment? ADVERTISEMENT 317 viewsOctober 30, 2014 0 Lori October 30, 2014 0 Comments Perform Better has a cube, but it does not have the correct dimensions for the shark skill. 2 Answers ActiveVotedNewestOldest 0 Harris12 Posted 0 Comments I like Karin’s idea. You are viewing 1 out of 2 answers, click here to view all answers. Register or Login