Perhaps what follows is known and been tried by others but I don't recall reading about it on the NG or hearing about it from others.
Yesterday I was working on a Norfolk Island Pine bowl that I had soaked and had a problem with the sanding discs instantly loading and becoming useless. Then I tried hand held Scotch-Brite pads. In order to try power-sanding I next cut the Scotch-Brite sheet into 2" squares and found that they held very well on the hook surface of the sanding disc . It worked so well that I cut up a bunch of squares of the various grits. It won't take the place of regular sanding but in this "Load-up" situations it was a big help. I found squares worked just fine - no need to take the extra time to make rounds.
Bob Ivey Northwest Woodturners Lake Oswego, Oregon