Product works great and is easy to use. Used the rough sandpaper, supplied, on the ding, added the resin and placed the magnifier sheet, also supplied, over it. Put it out in the sun and it cured hard and clear. If you get the amount right and use the magnifier sheet, then you might not even need to resand after, as i found. Hassel free.
Only downside is that it only came with two magnifier sheets and two pieces of sandpaper, whilst there's plenty of resin for many future repairs.
All in all, great product, did the job great.