I have a pond about a half mile from my house and it has some 20+ pound carp in it. I usually walk over and throw a whole can of corn into the area I am going to fish then come back about an hour later. I always catch 1 or 2 carp usually right away but I have never caught more than 2 no matter what I try. It's like the carp get smart and stop eating the corn because they know they will get caught. Either carp are really smart fish or I am doing something wrong.