First, the good news. The views from the end of the ride are incredible. Now the bad news: until you get there, this ride is just another boring dirt road to nowhere. This 7-mile ride is fairly easy, but there's some up-and-down riding.
The end of the ride is where Hatch Wash meets Kane Springs Canyon. You're surrounded by gaping canyons, 270 degrees. In front of you is a rincon, an island of stone left by the meandering creek.
There are many dirt roads that intersect the Flat Iron Mesa road. Just stay on the main road. At one point about 1.5 miles from the highway, you'll hit a "Y" fork that might be confusing. The right-hand fork was gravel-covered and wide. The left (correct road) went over a cattleguard and through the fence. Fortunately, there was a "street intersection" type sign.
Overlook coordinates: approx N 38° 22.48' W 109° 31.00'