A few months back Moldy Chum was running their slab of the year contest and John Montana was one of the entrants with a huge carp that he had landed. A lot of the members voting were very upset that a lowly carp would even be considered let alone be in the lead and eventually won the contest. You are finding just how hard it is to catch carp, it is no easy task, most people think they are trash fish and will eat anything so catching them with a fly rod should be relatively easy (at least until they try).
Send a PM to John Montana (aka The Carpman) he should be able to provide you with some insight into how to solve your problems, he definitely knows how to catch carp.
Speaking of carp