They’re easy enough, I do one in one hand and a bass or amp in the other from my car to my front door when it’s parked 50 - 100 yards away. For reference I’m 55 and have a bad shoulder otherwise I’d do the two at the same time.
I’m not in a gigging band (even putting COVID aside) so haven’t sourced any covers yet, but Roqsolid will sort these, they have a template on their site for new cabs, just measure it all up, they send out the cover then add the spec to their list, great company.