Fins work best when they’re tight against the hull throughout their rotation. Water escaping between the top of the fin and the hull adds drag, reduces efficiency. Here, a section of the round bottom has been flattened to accommodate the fin.
If you haven’t yet seen the Evo 43 then you’re in luck. This boat uses some really inventive design to amp up function in a sharp dayboat with a nice turn of speed. But when you anchor out, the Evo plays her trump card.
Check out the surprises she has in store here. ▶