One has been converted to a "twin grip" catcher - they drilled 2 holes through the back and tied a rope through it haha
I wouldn't mind attaching an old handle off a saucepan or rubbish tin lid onto the back of a single grip thumb latch catcher myself.
I used an length of old USB cable to do a makeshift handle for the rear flap of my SupaSwift beater by threading it through the holes for the missing handle.
It's far better than no handle at all I give you the drum.