Pretty much every print I do requires some spotting. Sometimes I'm not sure if others would notice but I do. I use the same kind of palette that Bill uses, and dry brush as Michael described. I also keep the palette in a zip-lock bag between uses. A little distilled water recharges it, and the stuff will last forever. I don't think I've added to the palette in over a year.. (I also save reject prints to dab off the excess liquid, and test it on a similar tone on the reject print).