Thermage for Body Fat Reduction?

I am in excellent physical condition at 5'8" 182lbs as a bodybuilder with a very defined stomach. I have an issue of slightly loose skin (in my opinion) on the lower abdomenal region along with a very small layer of fat that has been resistant to even the strictest of diet and exercise. I have a small amount of fat in the lower back on each side as well. Even when I diet down for a photo shoot or event it is still slightly noticeable.

I have looked into Smart lipo and body Thermage, both supposed to reduce body fat. However, I don't want to go so invasive as Smart Lipo, even though it will give the best result. I am also concerned tha Thermage might not reduce fat or tighten enough. How much tightening can someone with extremely low body fat levels, sub 9% or more, expect in these problems areas? My skin is by no means as loose as some that have given birth or lost an excess amount of weight but it is noticeable to me.