PXG is supposed to have a very effective fitting process. And with those Gen 2 drivers, they have 9 weight positions, and 4 different weights. They also have about 15 stock shaft offerings. And each shaft adapter has 8 different positions. So, to try everything out, assuming 5 balls hit for each position, you only need to hit about 462,348 balls.
Bring extra water. And maybe a 2nd glove.
I forgot water, so I just bought 5 PXG drivers and 8 shafts over the last 4 or 5 months, and did it all myself.