Bigdob, there is a lot of area near Yuma you can detect: Laguna placers, Gila/Dome placers, Pot Holes, Cargo Muchacos and others. Google prospecting near Yuma, AZ for more details. As for clubs, yes, there have been a few over the years but I never belonged and now I'm not sure any are active. There is also a lot of opportunity/options in Quartzsite, 83 miles north of Yuma via US 95 North, and areas adjacent to 95 on the way. It's a nice drive and takes you right along the Gila, Castle Dome and Kofa Mountain ranges. A lot of great mining history in those areas. If you make the trip check out the Castle Dome Mine Museum (Google it for details), it's worth the trip! Good luck.