Have you tried deploying the tab at 100%? And then start gradually lowering it from there?. I know people like to do partial deployment quite a bit, 60-70 %, and that may shape the wave, make the lip cleaner, but you're giving up list at the same time which makes the wave smaller. Especially if you're riding 11.5 MPH, that'll lengthen but also lower wave amplitude, maybe try increasing tab to 90-100 % if you want to keep that speed and see if it adds some height and push. What do you have to loose.
Granted the Makai is much heavier than Mojo so more displacement and you will get away with more speed, but I run my Mojo around 10 mph with everything full and tab at 100% deployment. That produces quite a bit of lift and I can see my boat prominentaly list. If have little ones and I want to tame the wave I'll lower tab to 60% or deploy the center wakeplate more.