According to state drain law, what must be done to watercraft plugs during transport?

The requirement that all watercraft plugs must be removed and stay out during transport is aimed at preventing the spread of aquatic invasive species (AIS). When plugs are left in watercraft while being transported, they can retain water, which may contain invasive species, their eggs, or larvae. By removing the plugs, the risk of accidentally transporting these organisms to new water bodies is significantly reduced. This is a critical measure in conservation efforts to protect local ecosystems and waterways from harmful invasions.

In contrast, the other options do not align with the state's proactive approach to managing and preventing AIS. Keeping plugs securely fastened, checking them while still in, or allowing them to remain during short trips fails to adequately address the risk of unintentionally spreading invasive species. The focus is on ensuring that all watercraft are free of water prior to transport, thus safeguarding Wyoming's natural resources.