Chad it sounds like you aren't going fast enough. As Bryan points out the speedo's are notoriously "off" at that speed. My suggestions are to try speeding the boat up, very slowly and see if that doesn't clean up the face of the wake. If it does and you can surf it, you're done. Note the speed then just reference that on PP or whomever is working the throttle.
If you find the wake only cleans up at such a speeed that you still can't surf it, I'd do as Markj suggests and add some additional weight to that side of the boat, then start the speed adjust over again.
I have found on many boats that you have to speed up a bit to clean the wake up and then let it settle down to a slower speed.
The bottom line though is you need a clean face. You can surf the white wash, but it's REALLY hard.