David C. Hanby, Jr., President & COO McDonough Marine shares with readers of MarineLink.com his insights on key market drivers for the coming year. What legislative/political issue do you count as the most important for the marine industry in the next few years? DH: Effective funding of infrastructure improvements of the waterway facilities our industry depends on to provide efficient, safe, environmentally friendly transportation of our nation's commodities. While the government seems determined to increase the tax burden on our industry…