I made six rack on Saturday morning and rolled them...this was the 2nd time I rolled and had good results.
First time I didn't foil, but 2nd time I was pressed for time and had to foil. Probably not the quickest way to do it, but I ended up pulling the skewers, cutting the racks into 3rds, and then foiling that way. Didn't notice an excess of juices in the foil after they were done.
Worked pretty well, although next time I might try just flattening them out before foiling.