How do quagga and zebra mussels spread from an affected water body to another water body?

If you boat on a lake infested with Eurasian watermilfoil or other aquatic weeds, what is the best way to prevent the plants from spreading somewhere else?

Zebra and quagga mussels impact recreational opportunities by:

A prevention program can help stop aquatic invasive species from being introduced.

Aquatic invasive species can clog water intake pipes and impede the flow of water to municipal water supplies, irrigation operations, and power plants.

What are inspectors looking and feeling for when they conduct a physical watercraft inspection?