http://www.seadoospark.org/forum/290-sea-doo-spark-troubleshooting/3274-trouble-shooting-stickers-adhering-spark-2.html#post36314In any case, I bought the sea doo stickers. They worked well. They come with a blank page to stick your square sticker to. Then cut out and put on the ski with their adhesive backing.
My MD sticker came right off, with a little pull.Thought about that several days ago looking at my numbers that have begun to be worn off due to rubbing on a pier during docking at time. Maryland DNR sticker stuck like glue with sticker as is. No additional backing.