The KD rig was designed by Kenny Dorsett and my 1st exposure to it was when I was experimenting with a standard knotless knot rig in order to present particles to what I thought were easy to catch carp. I wanted to present the hook in such a way as to hook them differently to how most anglers were catching them due to mouth damage. I thought if I could hook them in a different place I would have a better chance of landing them. A few months later I discovered that I had “re invented” the KD rig. I also originally started to put the weight on the hair ( rather then the hook link) as I normally use PVA sticks and was getting annoyed by moving the counter weight along the hook link every time I attached a new stick. Moving the weight to the hair make the PVA stick sit far far better and eliminated the irritation of loosing the weight at some point ( making your bait sit 6-8″ from the bottom)
The rig is not just for particle fishing but in my humble opinion works best for small baits and it is worth noting that normally it is used with buoyant baits, if you are not using buoyant baits then you can dispense with the weight on the hair.
1st strip a section out of your favourite hook length, in this case I am using Fox Cortex in 15lb breaking strain and make a loop with an over hand knot in the end.
Next using a baiting needle put on your bait, in this case 3 pieces of floating corn and place a fox popup weight on the hair underneath them. I prefer to use the Fox popup weights as they don’t tend to come off on the cast like standard BB shot often does.
Next take your hook, I find a curved shank hook works best for this rig so I will be showing this rig with a Fox SSC which is not too extreme as some are but is just curved enough to make the mechanics of the rig work.
The next part is the most important part. When making the knotless knot instead of whipping up both the shank and the hair, stop the whipping after 2 turns, move the hair out of the way and continue whipping up the shank for another 5 turns. Then finish the knot as you would with a normal knotless knot.
See how the mechanics and the hooking angle have been radically altered just from moving the hair back along the whipping ?
Then finish your rig with a simple overhand loop knot and you are done !
This is how it should sit on the bottom, notice how the hook should be sitting flat ? well this is not a rig to try if the bottom you are fishing over is full of debris and muck. However if the bottom is relatively free then this is the rig for you. I suspect that if this rig has not been tried on your water, some seemingly un caught carp will start to make an appearance as it really does hook fish in a completely different way to other rigs.
The Masterblanker 
