i have done extensive testing on many strains using both low stress supoercropping and high stress supercropping...it is certainly a useful technique...give low stress supercropping a try on some lower branches and you will see!! No harm will come to a lower branch that you lightly crush the inner walls to form a knot.
as always though...first learn to grow a healthy plant...then mess with advanced techniques. Supercropping on a plant with health issues is potential problems for sure