My wife got me a tonnosport access cover for my bday and I had a really tough time trying to get just one torx bolt loose. We just moved from CA and I had my tools in storage. I went out to harbor freight and picked up a set of torx drivers that come in those handles that you flip out. Do not do this! I nearly stripped one of the bolts trying to use them. I searched on TW for any tips on trying to remove the bolts and I saw a lot of people using bolt removal bits. I have them, but would prefer not having to spend the extra time to drill the heads and remove them. That and I'm anal about keeping my oem stuff in tact.
Fast forward two weeks and we moved into our new house and I got access to my good tools. I grabbed my craftsman torx T30 socket and my ratchet wrench and the bolts came right off. I stood on the outside of the truck, applied slight pressure on the head of the wrench and the bolts broke loose. No impact tools, heating up bolts, or easy out bits necessary. Just grab a craftsman T30 torx socket and your wrench and you're done in 15 minutes.
It got late, so I'm installing the cover today