I used to run a Rubicon Express long-arm suspension and its favorite pastime was getting hung up on rocks. It gave a nice ride on the highway but offroad, it was only ok until it had to contend with large trail obstacles like rocks. I now run a Currie short-arm suspension and it rides fine on the highway but it does much better on the more difficult trails I enjoy. I no longer get hung up on the control arms as I did so often with my previous long-arm suspension.
A friend (Black Magic Brakes) took the below picture of one of the many times my long arms got hung up on the rocks on a trail called Sunbonnet in Johnson Valley, then another friend saw it turned it into a poster.
P.S. My TJ had a nice pic of it in 4Wheel Drive & Sport Utility magazine 3-4 years ago. You guessed it, my TJ was stuck on a trail called Pumpkin Eater and its front long-arm control arm was hung up on a big rock so they snapped a great photo of it and published it.
I learned my lesson, no more long arm suspensions for me.