I use a similar system but simpler.
First I attach a longish line to the bow of the dink.
I take the other end of that line and run it through the last free link in the anchor chain (the link will act, in effect, as the pulley in the above mentioned systems).
I then attach that end of the rope to the stern of the dink.
I then step on to land, with line in my hand, and adjust the position of the dink by pulling on the end of the line ultimately attached to the bow. I then tie-off the loop of the line to a tree or a rock.
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