Two things.... can you catch the wave on another boat? If the answer is that you haven't tried... then.... you're just a newbie that is trying to blame the boat.
I participate in a lot of board sports and had surfed in the ocean several times.... it still took me far more days than I'd like to admit to be able to find the pocket. During this time, I was always trying to blame the wave or the board or my weight or foot size or anything else besides my ability level. Now that I know what I'm doing, these factors took care of themselves.
Second thing. More weight. Always more weight. If the rub rail isn't dragging, you can get a bigger wave. More weight in front = longer pocket.... more weight in back = more push. I run with my wakeplate slightly down, ~1800lbs in the back corner and a person or two in the front.
Nobody will have the magic bullet for your setup.... it's all trial and error as even the exact same boat can yield different results. Good luck!
Former owner of a 1987 Supra Saltare. Current owner of a Malibu 23LSV.