If all you care about is the carp then limit the # and feed them pellets. Forget the LMB and use non-reproducing HSB and HBG. Trap , seine ect any offspring and takeout the big ones and eat them.
Fritz is new to all this and actually grew up in a very large city in Germany. He's still learning to fish let alone seine. However I have no doubt he will learn fast. And at the same time he does not live at the pond so hands on management time is at a premium.