Check out the grow logs of some of our AZ members, a great place to find some tips.
Wrightdaddy's grow log (just outside phoenix AZ) -
http://thehotpepper.com/topic/27203-wrightdaddys-2012-grow-log/
frosty's grow log (phoenix AZ) -
http://thehotpepper.com/topic/29198-frostys-glog-2012/
Cowboy bhuts grow log (Mesa AZ) -
http://thehotpepper.com/topic/19777-cowboys-never-ending-grow-log/page__st__20__p__420736__hl__cowboy#entry420736
I'm sure there are plenty of others, those are just a few I remember off the top of my head who are in my climate (Phoenix AZ). I won't give any tips of my own cause all 3 of those guys are better growers than I.
The main takeaways I have found are
1) Shadescreens during the peak heat of summer over the entire plant seem to help. I think you do best with as many hours of sun as possible, but lower the intensity and try to keep the plant and soil temperatures down. So 8 hrs of sun will get more growth than 3 as long as you can control the heat.
2) If you use pots, try to keep the pots themselves shaded or cooled somehow.
3) Expect to get most of your pods in the spring then in the fall as they seem to produce less in the peak of summer.
I'm also starting to get some flower drop on my plants right now, we may have a few months of poor pod production ahead. Just try to keep your plants growing and healthy so they will be ready to pump out lots once the temperatures start to drop. I would stay away from "keeping plenty of water in the pot", overwatering may do more harm than good.