Isaac Schrock

I have a small pond on my farm around 3/4 of an acre. My dad stocked 2 grass carp in there around 4 years ago and they are still alive and kicking. They are either both the same sex or have no success in reproducing because I only see these two in there. Both are at least 30 lbs if not more and now my dad doesn't want them in there so I am totally up for the challenge of getting them out of there. One problem. I have no idea where to start. I have read that wonder bread and sweet corn chum could attract them but I'm lost from there. If anybody has tips, tricks, or ideas for me to finally catch these awesome fish I would love to hear it!