Bro, There has been a MAJOR redesign in the WH front end!
http://www.surfingsports.com/pimages/
wh_carbon_makai_head.jpg It's the first boom in the industry that will rig on a conventional size mast or an RDM (skinny) mast without any adapter! The special 2 door front boom end fits any size mast easily, quickly, and securely...no slippage...no shims needed...I'll say it again...the mast cradle doesn't care what the diameter of the mast is...it adjusts through the whole range.
WARDOG