Yes it is difficult, especially when the laptop bag is the only thing they brought on! They think, why should I have to move my bag for some idiot who brought a trolley on? Which I can see their point but when you have 4 Platinum flyers yelling they will take their business elsewhere, and the trolley doesn't fit in the locker (even though it fits in the test unit) then you kind of see why I had to check the trolley in the hold
I just try to keep the small bags going under seats during boarding and rollaboards in the lockers but you can't catch all of them! Until there's standard sizes I think this isssue will continue!