hard to say. the clearance between the centerboard and the truck walls is small. a larger bolt may just sit on 'top' of the board. very small may try to 'wedge' between board and wall. :: Dave Scobie :: former M15 owner - www.freewebs.com/m15-named-scred -------------------------------------------- On Wed, 4/9/14, Kearns, Kevin P <kkearns@pitt.edu> wrote: I just dropped a bolt in the cockpit of my M15 and, of course, it found its way down the drain. It is on the trailer now, so I can't check to see if this will jam the board...I'll have to wait till I launch it. Does anyone know what my chances are of this jamming the board? Nothing I can do now, but I would appreciate some experiences. Darn. Kevin Kearns, M15 #518 Pittsburgh