Janelle,
I was in Northern CO (Fort Collins) so they mostly went out at Horsetooth or Boyd. I do have some friends in Denver though, I'd have to check which reservoirs they ride. I would definitely go to the Mile High Meet and Greet and talk to Steve Jones (
http://www.wakeworld.com/event.php?event_id=2793).
There will be a ton of other riders and wake enthusiasts there as well...a great place to meet people!
If you want specific people to call please email me.
lin_zs1@hotmail.com
Good luck!
L