As for what side of town I live on, I live on the far eastside. I go to Red Sands when I can and have gone mudding once, you know, that one time it rained... While it was fun, the cleanup was a pain. Also, just noticed you were from El Paso, so if you wanna see my flagpole set up, let me know.
Sorry, I haven't been on in awhile. As for the flag mounts, I used a 4x4 attatched to a 2x10. I'm sure you've noticed the slots in the bed of the truck along the side wall. I have it situated so that the 2x10 slides into those keeping it upright while the 4x4 is attatched right next to it. I then have the 4x4 drilled with 1 inch holes to hold the flag poles. It sounds right to me, but that's cause I've seen it. If it doesn't make sense, let me know and I'll send a picture or two.