They got an old basketball Plexiglas backboard and made scrapers out of it
I saw on slidewright they had the nice 6mm ones, and was gonna order one for him, and he told me about this.
If you have hands that have a hard time holding on to things like me, thicker things fatigue your hands less.
Thought I would share.
I'm thinking these would work better on snowboards. less flex giving you a better scrape across the board.