Nothing magic in bodywork and paint, it all takes some patience, time and some hard often messy work. Are you sanding with a little six inch orbital, If so that could take some time. If it is then turning the weight to put it in grind mode to get the bulk of it off may help. A more powerfull sander such as this for larger areas would go faster, if you have the air to keep it powered. I stripped many hoods in roof paint peelers in the early 90's at the ford dealer with one of these. It was easily done in a few hours taking down with 36 gri paper, going over with 80 in a 6".http://www.nationaldetroit.com/tools...aspx?model=900
Go here for a good explination on how stripper works and how to use it. http://spi.forumup.org/viewtopic.php...=15&mforum=spi
Just be happy you aren't getting rid of a bunch of undercoating, then you would really be in for some tiresome messy work.