OK boys, here's the latest. My buddy Joe Poire, who races (and breaks!) I14s regularly, stepped up and said "lets fix it' now big deal". Spliced it in much the fashion recommended above (Wouter?), wrapped the break in carbon weave, then a 30" wide glass weave. 3 guys, 7 hours, a heat gun, and a fair amount of beer, and I once again have a one pc mast. Still in debate about whether to throw it up again and watch it closely, or laminate one layer of carbon uni from base to hounds (which I'm leaning towards). Upon completing the repair, we walked the mast out to the trailer and set it in the cradles. Turns out the repaired break landed directly on the support cradle, which generated the suspicion that the mast may have been damaged at some time while in transit at some point (I trailered the boat from SF to WA last Nov, don't know how much travel it saw before me). There wasn't any damage visible on the outside of the mast, but the base is quite heavily reinforced around the foot and gooseneck, so maybe this extra weight hanging some 6' aft of the mast cradle and bouncing around over some thousand miles created some damage or stress internally. I don't know, a bunch of theories have been posited here, several quite detailed and most believable, often conflicting. I'm very grateful to all of you for all the advice, education, and offers of replacement masts. I'll keep you posted as to whether she stand tall.