never tried it...
i've had my best luck with a combination of the following:
Softscrub & pad or comet & pad $5
buff magic rubbing compound and elbow grease $35
wet sanding with 1500 waterproof and of course, more elbow grease $6
lmao... so true, but i've seen some amazing results to SD hulls by just hitting it patiently and meticulously with a piece of wet 1500 waterproof sandpaper. ($6) the key is patience and a 6 pack of cold beverages along with some good country music