I think it's a two strand diamond knot. Yeah, also known as lanyard knot. To be clear, I didn't tie the shackle, the rigger friend did while I watched.

I do have Ashley's book, it's was my bible a for time of my life :)

Alistair

> On Jul 31, 2015, at 11:25 AM, Roy Nicholl <RNicholl@NBNET.NB.CA> wrote:
> 
> Larry,
> 
> Not being able to pick it up and look it over, it looks like a {double} lanyard knot in the photo angle (but it could be a variation on a Button).   Get yourself a copy of The Ashley Book of Knots ... the reference used to teach decorative rope work when I was on the tall ships and in the navy.
> 
> 
>> On 31-Jul-2015, at 14:46, Larry Alofs wrote:
>> 
>> Where do I learn to tie that stopper knot?
>> 
>> 
>> 
>>> On Fri, Jul 31, 2015 at 12:27 PM, Alistair Bell <albell@shaw.ca> wrote:
>>> 
>>> It's ok Ben, safe for work.
>>> 
>>> A bit of a Friday topic. Yesterday a rigger friend dropped by work and we
>>> started talking about the tow points on my rear bumper. I told him I had
>>> some mighty shackles to fit them, he suggested soft shackles. He quickly
>>> spliced and tied one up using 1/4", 12 strand spectra ( not sure if it is
>>> actually spectra, might be amsteel).
>>> 
>>> Interesting idea, the soft shackles certainly are easier to store. 5/16"
>>> spectra would be better, 9,000 lb vs 6,000 lb breaking strength.
>>> 
>>> Pic here, tails have yet to be cut off. Do that after I give the shackle a
>>> serious pull ( compacts the stopper knot).
>>> 
>>> 
>>> https://shufti.wordpress.com/2015/07/30/vanagon-soft-shackles-on-tow-points/
>>> 
>>> Alistair
>>>