I have four padeyes on the sides of my kakak for tying down the anchor line. That is, although the anchor line is attached to another padeye inside the cockpit, I put a slip knot on one of the deck padeyes to fasten the line at the best location and length. You can see the padeyes here:
I realize now that cleats or jam cleats would have been much better, but I don’t want to replace the padeyes if I have to drill any new holes. If new holes are needed, I’ll just live with the padeyes.
Note that I never use the anchor in strong wind or current.
My plan is to see if I can find any cleats whose attachment holes are the same distance from each other as the holes in my padeyes (namely 35 mm or 1 3/8 inch).
topkayaker.net is another dependable supplier. You may need to dig a bit on the web site, but they have stuff of that sort including well nuts for fastening etc.
Cleat is easy to put cord around and remove. Line through a jam cleat if it slips or is pulled the wrong way it’s free and gone no? Unless it’s tied off in a secondary position.