In almost all situations, provided the placement is sound (good rock, not too slick or flared), a Micro Camalot of size .3 and above, will likely be reliable when fully retracted (only problem here is that the unit may be hard to remove) to 25% retracted. With the .1 and .2 Camalots being so small, they start to lose the ability to hold a fall at about 40% retraction.