Thanks. I'm not sure if it came from you, Adam, but have a Lifeguard Aquatics Scratch Removal kit. Unfortunately, those kits only have one 2400, one 3200 and one 4000 grit pieces and they are only 3"x4". That size often slips off the magnet as I'm running it. A larger size can be secured so it doesn't slip. The other 6 grits in the kit are ineffective for quick polishing/algae scraping of the inside surface. They are too course leaving fine scratches that take more time to sand out, or too fine taking forever to do the job.
I'm still looking, if anyone can help me. I'd be happy to purchase the sheets for ~$5 each.
Aloha,
Mark