Carp are good fighting fish. As soon as they hit your hook they will make a good run. So set your drag loose to avoid them snapping your line and as you tire out the fish set your drag a little tighter and bring that sucker in! The big ones especially will put up a great fight from the get go. If your fishing for bigger Carp I would recommend using a 20 pound test line. I personally prefer spider wire. That stuff is amazing.