I have stainless steel plates screwed onto the boom that prevent this. The same thing that happened to you happened to another boat in this area and installing these plates prevented it recurring. I can find out where he ordered it, if you would like; I believe it was RigRite or Rigging Only.

The photo below (the best I could find, this is the boat when I bought it) shows the plates at the end of the boom.

[Linked Image from rambunctiousracing.com]

[This message has been edited by Jason King (edited 05-29-2008).]