http://www.indianangler.com/viewtopic.p ... feeder+rig
here you go, there's one made with lots of R&D and hard work by an angler who has caught all species of fish and some real big grass carp, he added more weights to the original design for better chances of hookups. His success can be witnessed with the big sized carps he had caught. fishing for carp is more like a science I feel, there is a lot to it. I am personally doing lots of R&D keeping Pune waters and the spots we fish in mind and with lots of advice and reading I have a plan which might be successful. I've seen this method being very fruitful for many anglers and have no reason to believe it won't work. Best of luck. Do keep in mind flow of water and along with the feeder groundbaiting the area will also add to success.