Hey David,
would be interesting to see what you have there. All of the softies I am using were built by Colligo. I seem to recall hearing the knots were set using a machine. I know the end is melted also by looking at them.
I did not get the name of the knot, but they published a know here that may be it:
http://www.colligomarine.com/docs/mi...topperKnot.pdf