I guess I'm thinking of those heavy industrial mop buckets I remember seeing the janitors at school with. Maybe it would have been easily carried. I think our new poster had a valid point of why it wasn't caught on the video, but we don't know for sure which was AK walked.
I still find it strange about the bucket, but it's not enough to convict. It is enough to wonder if they did drive there that night and see something. Maybe they didn't really "see" anything, but after discovering the body the next day, thought it was the best thing to just say they weren't there getting the bucket.
Know what I mean? Maybe when they got there, the doors to the room and the house were closed, they got the bucket and left. RG says in his testimony that someone must have returned to the house. Maybe he says that because he felt bad and returned. He could have spotted them leaving with the bucket at that point, reentered the house to check if MK was alive or not, then put the duvet on her and left, that time locking her door.
I guess if the house was dark when they arrived for the bucket, then they'd assume no one was home, so they wouldn't knock on MK's door.
OR like you said, maybe the bucket was light and she could have carried it in one hand.
I pulled up another picture of the mop and posted it. There were actually two mops in that bucket, and the short thing you refer to looks like the lever that one would use to squeeze the mop in the bucket.