That could be the reason that Manetti appreciates soaking too, Lyn. Jackson & Perkins and Wayside Gardens used to use a lot of Manetti rootstock before they switched over to Dr. Huey.
The prettiest rootstock is De la Grifferaie, which is used for tree roses. My neighbor was really upset when one of her tree roses snapped in half and she lost the whole top, but this is what grew from the bottom.
