Hitting a stone or other small object with a road-bike front wheel is tricky and dangerous, especially if you are going fast and/or are turning at the same time. As far as falling goes, take some judo classes where part of the training is learning to be thrown and learning to hit the ground. Stunt-men do this all day long so anyone else can learn it. I have been falling for sixty years and always seem to do pretty well with it, but I am open to learning.