Corn Clone

It is generally better to clone plants with really good genes and harvest the rest. If you are interested in cross breeding to get the most out of your growing setup, keep a few decent ones for crossbreeding.
This is not my video, but it is a great tutorial for crossbreeding the perfect strain (all G's and Y's, though you could also go for H's if you live in the snow): https://youtu.be/I5w0KAqkHYI