Weight based snubber

[Beachbummer]

So, I was moored in an island near the ship channel in Houston, where many big swells come to shore, and I was thinking of using a 10lbs old rubber coated anchor as a snubber, by attaching it 25 or so feet back from the anchor, to give the anchor a bit more help. When 4 or 5 large swells arrive in succession, the anchor can drag a few feet. After a couple of hours it's moved quite a bit. I'm hoping this will give the anchor more room before it's pulled so taught by the swells.

Any thoughts on this being a bad idea???

I'm not impressed by the normal rubber snubbers I have seen for sale, so thinking outside the box.


Edit: not so outside the box. It's called a
Kellet.