I anchor off the bow of my kayak with a quick release system like bsteeves put together on the NWKA site. When I am not using my anchor I throw it, my crab buoys and the spool holding my line in my crate. I am not sure why you need something like the anchor mate. When I pull up my anchor I haul it up by hand and throw the line off the opposite side of the kayak while gently pedaling. When the anchor is in the kayak I reel the line back on the spool (extension cord reel).
Fish tremble when they hear my name
A ship in harbor is safe -- but that is not what ships are built for.
--John A. Shedd, Salt from My Attic, 1928