a lot of people use the same sort of rigs that they would use on a flat bottom on thick weed. I believe that this can cost you fish. A coated hooklink may not lie flat in thick weed (regardless of putty) due to the unevenness of it. The way (in my opinion) to tackle weed is a medium length rig (5-7 inches) and a pva mesh bag the same length as the hooklink. Thread the hooklink through the pva bag to ensure the hook is protected.