Yup he effectively beat me to it.

First the pilot has to recognize that the plane is in trouble ( assuming he still has radio control ), he has to make sure the plane is somewhat upright, then deploy the chute... there go 3 seconds alone if not more...

Now the chute deploys 1-2 seconds, and begins to fill 1-2 seconds... finally it catches and STARTS to slow the plane 1-2 seconds.

Most planes would be on the ground in pieces long before this time.

Such a system would not help me after having thrown a plane through a tree inverted during the bottom part of the outside loop of a cuban 8.....

( I broke off the rudder, punctured both wings, and broke an elevator. I was able to land the plane mostly because I had practiced rudderless flying on a simulator a few days before this happened! )

The time for deployment is just not there... and the only time you really need a system such as this is when the plane is auguring into the ground at full speed, while you watch the broken tail or wing fluttering lightly to the ground.

Wheel brakes or a drogue chute are far more useful and will do more to save my plane, than a CAPS type system.