Wind strength, chop and boat speed .., drift .. are the same regardless of the boats sizeI've seen slightly better examples of the shop bought ones than I linked to. Shaped better to trip and not tangle, and they must be cheaper than buying an anchor... I accept weight is good in these applications. There is a difference between what you might load onto a 35 footer and a 65 footer...
Previously I always used the old weighted line with a quick release knot tired in it, so I was impressed when I first saw a chap using the hook method.
A heavy J is easier to control ... 3 of 4 kgs seems to handle well