I'm with Fraggle on this one.We have a tendancy to over analyze and over complicate,what is in essence,a simple method required to catch fish,be they carp or any other species.
The most simple rigs have and will always catch fish,more so than ANY other more complicated rig.PERIOD.
These wacky rigs come and go in a heartbeat and for good reason,they're mostly crap.
Every rig will have its' day,but probably not as many as a simple one.
Stick a worm directly on a hook and I will,over time,outfish every complicated rig out there.
Just my 5 cents worth.