Over the years I've just let the marina do why they had to do in order to winterize the boat. After careful review, I feel like I've been nickeled and dimed and charged in some cases 50% markups on materials used. This year, I'm looking to do some things myself. For starters, I'm going to buy the materials. The base cost on the material is great online, but the shipping prices are murderous. I feel like these marinas have a cornering of the market and force consumers to buy through them. I'm in the NY. Does anyone have any recommendations?