The heat guns approach works great if the tape is still more or less intact. I let the Val’s tape get so bad that he outer lawyer was cracked, and it really gets to be a mess then - it doesn't just peel off. On the plus side, the adhesive was almost crystallized, so I was able to scrape it off - it was just tedious. Took about four hours of work to get both flaps clean (I just did this a couple of weeks ago).
This was the second time I’ve had to remove the tape off the fifteen-year-old airplane, and I said that “enough was enough!” SO I did what I have done on our two other RV’s, and went with stainless steel. Looks great, lasts forever. McMaster has it in 3” width and a 3 yard roll. Unfortunately, if you measure the flaps on an -8, the three yards won’t quite cover, so I ordered two rolls. Then I discovered that the rolls are actually about three yards plus six inches - so one roll covered it!
Paul