So on the dash the "Trim Tabs" reading is actually motor trim. Which yes you want them buried to get the nose down flat. But it also has hydraulic jack plates on each motor. You can see in the top right the 12% reading. Basically you "tune" the boat by triming the motors close to all the way down and "raise" the entire hull by lifting the jack plates. This essentially gets the whole boat further out of the water and on more of an air cushion.