To catch a carp there is a lot of cheating involved. we take about 10 pieces of bread (white) and we use it as chum then they will come up (but dont put alot of bread in there cause for them to see your fly and a 100 other pieces of bread your chances get slim) i put about 8-20 pieces in the water not balled up cause it sinks. The fly: i tie me up a solid white saddle hackel wrapped around like a "wooley bugger " bit you want to make it pretty big and then i put some white buck tail on the end of the fly.
But if you realy want to have way better odds just put a piece of bread on a hook but it wont stay on for a long time... so i came up with that make-shift fly. i hope this helped.:letsdrink