I flew 125+ hrs in SD in the summer 2007, based at Plus One Flyers at Montgomery. Had a PA-28 pretty much to myself for the five weeks I was there and had a ball. Flew to Las Vegas (Henderson Exec), Palm Springs, Santa Monica (straight over LAX at 2500ft via the VFR corridor), Santa Monica and San Fran (amongst numerous other places). I'd probably go at a different time of year if I did it again - I went in July/Aug and it was extremely hot and turbulent - but I wouldn't have missed it for the world. Best ever flying - ever!
Dave Somebody-or-other was the Ops guys at Plus One. I actually arranged the aircraft hire through the owner via the +1 website. You'll need to a FAA ticket (involving FAA docs and a straightforward checkride) - the CAA website provides all the details on what to do.
Hope this helps. Have fun!
HW