Why can I just put a clear waterproofer on my wood to keep the natural look?
Any clear waterproofing agent you put on your deck first of all is water-based, and will not last for more than 8 months on average. Water-based products do not penetrate the wood they are applied to, they just sit on top of the wood, and actually trap any moisture inside, causing premature decay. Also, if there is no pigment in the stain, then you are not getting any protection, because the pigment in the stain deflects the sun’s rays. The rule of thumb is, the more pigment in the stain, the more protection your deck is getting.