Steering torque pulls at the wheel from prop torque. If steering is pulling to port trailing edge of tab goes to port.Pulling starboard tab to starboard.If boat is leaning thats also from prop torque could lean from trimming in too far or motor mounted too low,long shaft on a short transom.Or just plain from prop torque.Sometimes A deep V boat will try to run on one side of the V.
You could try moving weight to the starboard side.Sometimes a boat will absorb water and lean from the weight.You might check the boat at rest.
Check the bottom for distortion especially near the transom.
Generally a 4 blade is to improve low end performance and in certain specific designs push heavy awkward loads.A 3 blade is more for all around performance.