Bill-
Although you could mount an eyelet to tie the rode to on the wall of the bulkhead that makes up the rear of the anchor locker, it's much easier to make a large disc out of plywood, drill a sufficently large hole in it, stick the end of the rode through it, and then tie a knot in it.
This obviously blocks it from going out the deck pipe or windlass exit.
Easy to disassemble to change the rode, too.
I'd treat the plywood with wood preservative or, better yet, paint it throughly to prevent delamination from water.
Better yet, ,make it from plastic that won't fracture or rot ;, e.g., Starboard or HDPET{cutting board material}, or Micarta.
Joe.