Signs of excessive/insufficient installation of outboard engines

I often see people setting the wrong height for their outboard engines, which limits the optimal operation of the ship.
So should you raise or lower your outboard engine? How do you know if your outboard engine is too high/too low?
Generally speaking, if the height of the outboard engine is appropriate, you should be able to see the AV board splashed with water during operation. Otherwise, your outboard engine may be installed too high or too low.
Checking some typical signs indicating that the outboard engine is installed too high/too low can help you quickly identify the height issue of the outboard engine:
Symptoms of installing the outboard motor too low:
Slow speed
Poor maneuverability
Lack of RPM
Excessive resistance
Ship jumping
Water is pushed upwards into the engine hood
Symptoms of installing the outboard motor too high:
Propeller burst during rotation
Propellers tend to be ventilated
Low resistance and low water pressure
Lack of thrust
Motor overheating and internal damage
The motor noise is too loud
The only way to truly understand is to conduct tests to see if your outboard engine is set at the optimal height. Listen to the operation of your outboard engine in water, observe the relationship between engine speed and ship speed, and pay attention to what the water/wake behind the ship and outboard engine looks like.
The above symptoms are common when the height of the outboard motor is too high/too low, but they are not precise indicators and can only serve as clues to guide you to the correct height.
If you are still unsure if your outboard beam height is correct, please feel free to comment on your current setting pictures and any signs you observe during operation so that we can discuss the best solution and help you achieve the ideal outboard installation height suitable for your ship.