What is the best deck for a dock?

In the realm of maritime construction, selecting the optimal decking material for a dock is a crucial decision. Could you elaborate on the key factors to consider when determining the best deck for a dock? For instance, how do the durability, cost-effectiveness, slip resistance, and environmental impact of various decking materials compare? Are there any emerging trends in decking technology that may provide advantages for docks in particular climates or settings? I'm eager to learn about the various options and how to evaluate them for the best fit.