Does a trip to the marine store for a cleaner or polish leave your head spinning? To help you navigate the maintenance aisles and to save you from unnecessary swabbing, Powerboat reports editors have painstakingly tested product after product to find the best of what’s out there.

Cleaners/Protectants

"Black streaks" can be found below scuppers, windows, and stanchions; they pop up when pollutants in rainwater bond to the boat’s surface. We tested 11 products that claim to vanish the streaks (April). After a few rounds of testing, Nautical Ease Black Streak Remover remover ($7.59/oz., nauticalease.com) came out on top, leaving the once-stained gelcoat streak free and shiny. It’s also marketed as…