Flying I and Code Blue,
there will be no difference in the maximum stress in the fuselage (above the main wheels) but obvously none further down near the tail. However you put a higher shear stress on the section which is not good. Overall i don't know which outweighs the other.
I certainly think that pushing on the tail plane itself is a bad practice, as it puts a torsional load on the fuselage, but most of all stresses the connection between the fuselage and the tail plane.
Does anyone know what kind of loads (vertically) the tail plane takes in flight??