There are some jumps in Papago Park. It is not a big area, and was probably built by BMX kids, but I saw no one there yesterday. It is kind of by the South end of the canal and the big irrigation retention basin.
Im interested in hitting the flag DH, and am happy to split shuttle duty. Im unfamiliar with the area and have been looking for someone to show me the ropes up there. I was the guy riding the Trek Fuel (XC) bike on the second to last Sunrise trip with GnarGnar. I have since bought GnarGnar's old rental Glory, and have loved riding it so far.