I'm brewing extract kits, and my most recent brewing upgrade was to get a large kettle to do full volume boils. I used it for the first time this weekend. I was a bit worried that my stovetop wouldn't be sufficient to boil, but wanted to give it a try before buying a burner. I was able to get the wort to boil, but not a full rolling boil. The temperature was 208, which should be ok considering my altitude of almost exactly 5,000 ft. However, because the wort wasn't at a full rolling boil the entire time I ended up with almost a 1/2 gallon of extra volume. I'll adjust that next time, but this also makes me wonder if I should have boiled it longer or added additional hops (it's an IPA) or other adjustments. The fact that I'm at a higher elevation never occurred to me before. Any tips for brewing at higher elevations?