don't get too hot so I think heat gun is over kill...I found that setting up space heater on up side waste basket worked best b/c hot air gets trapped in wheelwell heating up entire fender and liner pretty evenly...to be sure though i worked one half of fender with heater warming the other half...moved heater to other half and rolled the ther now warm half..and so on...just keep it warm and keep moving as i said total time only about 15-20 min plus another 15-20 to get just so perfect...In fact i did one side after coming home and eninge heat alone made it almost warm enough (only 1 spot had small spider cracks - with the heater had none and job went faster)

"It is so choice. If you have the means, I highly recommend picking one up."