Sorry to bump an old thread, but we bought a 2012 226 and have finally dialed in a very good surf wake. We are 50/50 wakeboard/surfing. This boat took longer to dial in than we thought, but we finally have it now. First off, for wake boarding, speed is your friend. My kids wanted to ride at 16.5 when we first got it and the wake was horrible no matter what we did with the ballast. We moved up to 18.7 and it was all the difference in the world. Now, we run completely without ballast and can get both wakes super clean with decent enough pop. We're not yet advanced enough to worry about the wake size, but we had a professional rider out with us last weekend (Kirby Liesman) and he was able to throw every trick with zero ballast at 22.2 MPH.
As for surfing, here is what has been very successful for us: We plumbed in an additional 600 in each rear locker. So we fill the port (or starboard) completely (900+lbs). and the belly completely (another 400ish) and place a 750lb sack on the floor all the way astern. Depending on who is on the boat, we put two adults in the bow or another 300ish pounds of ballast. So about 2200 lbs is all we need for a very tall wake with a nice crisp top and a decent curl. It's not the longest wake I've ridden, to be sure, but it is big, clean and has plenty of push. The rub rail is about 1" from the waterline.
We only have 1 goofy foot rider and the starboard wake is definitely not as nice but still serviceable. We run at 10.8 MPH. I've found that you want just enough speed for the rooster tail to "pop" off to one side. Once that happens, the wake cleans up and you're good to go. Hope that helps someone else, because it took us a lot of jacking around to find the best wake.