The good news is that more and more Americans, often seeking an escape from the  pandemic, bought powerboats last year than ever before. The bad news is that at least some (many?) of them were new to boating, and were not familiar with the Rules of the Road or even basic boat-handling. Now the Brunswick Corp. is doing something about that. Brunswick, the corporate parent of Mercury Marine, Bayliner, Boston Whaler, Crestliner, Cypress Cay, Harris, Heyday, Lowe, Lund, Princecraft, Quicksilver, Rayglass, Sea Ray, Thunder Jet and Uttern boats, plus the Boating Services Network and the Freedom Boat Club, just announced…