It seems that a lot of pilots have a misunderstanding of slips and skids. One needs to understand the forces involved in a slip and skids to truly appreciate its applications and limitations. Even the FAA teaches improperly uncontrolled stalls to initial CFIs. It has become a viscious circle and leads to pilots saying "it's not a good idea to be cross controlled on final for crosswind landings... if you stall you will spin". Ask any experienced aerobatic pilots.
Without going in too much details, if you slip you create two forces in opposite direction: horizontal (created by bank) and fuselage lift (created by Beta angle). If the two forces are in balance, stalling the aircraft with cross controlled inputs will not be any different than stalling it coordinated. This is exactly what the FAA teaches and it is completely wrong. You can do this maneuver forever and all you see is you descending rapidly like a falling leaf. What needs to be taught is the danger of skids not slips. It is so hard to spin a slipping aircraft because much of the load is carried by the fuselage. The only way would be by loading quickly the fuselage (pulling Gs).
In a skid, you create also an horizontal and fuselage lift but both go in the same direction. It is impossible to maintain heading in a skid. Impossible. If you stall in a skid, all forces go in the same direction and if you were to spin you would enter in a spin.
What I am getting at is the best crosswind technique is the slip. You can achieve far better result. This is the prefered technique used by test pilots. This being said, it cannot be done on all aircrafts because it is often limited by geometry (engine pylons, wing swept,...).