How To (Ugh) Water Seal Your Deck

I don't even want to think about it, water sealing my deck. Last weekend, I spent most of Saturday bleaching out mold and algae stains on my deck with a bristle brush on my hands and knees (oh my aching back).

Now, the next step is to water seal the deck, to prevent it from rotting.  So, here is a how-to video I located on the subject.