Haven't got one on a fly, yet, but I've caught quite a few on jigs with plastic grubs, so I know they'll readily take a fly. Drum in these parts average roughly 2 to 6 or 7 pounds and their characteristic battle mode seems to be an initial drive for deep water that is very persistent. They really make the drag sing. I have noticed that they lose steam after the initial bursts of energy. But if you tie into one you better have your drag set properly.
Enjoy them. They're great fun.
Bill