The gecko II was solid on all types of terrain. The positions in New Mexico were off all types of objects, trees, rocks, tank traps, prone. I used the Gecko as both a front support and rear bag and it was phenomenal.
No slipping on objects, gripped my MPA chassis held solid in all positions. Several pro shooters used my bag on a couple stages and were impressed with how the bag worked. On a long range stage to 1470 yards the whole squad used the gecko II as a rear support bag as all other bags were sliding around on the sandstone.
Great bag I want to add a support pillow to replace another pillow bag I use. The grip material truly makes a huge difference.