Calibrating Mecanum Drive

[Jogo]

I have a question regarding calibration of mecanum drive.

I am comfortable with using the gyro to regulate rotational movement. However, is there a decent way to regulate translational movement? One thing I fear is that each wheel will move at slightly different speeds relative to one another...would the only way to deal with this be to wire up four encoders? Do teams commonly use control loops to regulate wheel speeds?

Thanks in advance for any tips/advice.