I'll second swingdude, I always keep my leg loops high and tight. Loose leg loops means they move all over the place when you sit down, sometimes crushing your junk.
Other things I'd recommend trying would be shortening the bridge a bit and like simplyarbor said, shortening the webbing from the waist belt to the bridge anchors. This will put more of the load on the back pad vs. the legs. Make sure the bungees are not too tight, as this can cause the leg pads to ride up and the back pad to slide down as you move around.
Like a lot of folks I know, when I first got it I wasn't sure either. It felt really squirrelly and too low, and only after some fitting and experimentation did I learn to love it. Some saddles 'center' the climber, keeping them in a comfy position but restricting movement. The treemotion, IMO, is on the extreme other end giving total freedom of movement, but it takes more energy to control your body position compared to a saddle that allows less movement. I think having a saddle that holds you lower also requires a lot more core strength.
I'm on my second treemotion now, pretty much the only saddle I've used for the last 4+ years. I don't think it's perfect, but for the type of climbing I do it's pretty darn close.
Steve
