String the racket with 2 pieces.
Install mains as usual.
Using the second piece start the crosses in the middle of the racket using the same method you used with the mains. You will need a starting clamp.
Now install one cross going toward the head of the racket.
Now install one cross going toward the throat of the racket.
Keep alternating until all the crosses are completed.
No break, no boomerang, no problem.
It is my understanding Prince has no problem with this process as long as you alternate the crosses, i.e., one going up and one going down.