my daughter came home this weekend for her annual birthday/red snapper fishing trip. we were heading across the bay and heard a "clunk" like we had hit something.  i stopped the boat and we  looked in the water but saw nothing.  i got back up on plane and was heading toward the pass, when i noticed the anchor was missing.  it had fell off the pulpit, but the shackle and chain were still there,the clevis pin had come unscrewed.  i pulled into the shallows to check out the hull & foot. and this is what the prop looked like
 
  i remember commenting to someone this winter about saftey wiring a shackle,  this is why you do it.