However, the wood surface would not be protected either, since there would be no film to guard against the elements and to give, as Rhinoguard does, a beautiful three dimensional appearance for the wood-grain. While comparing the current ineffective offerings to water might be stretching it a bit, it is not unrealistic. Thus while they penetrate, they leave no film, and sometimes some color that sits on the surface, but doesn't last. Since there is no film, there are no lap marks, and no shiners, and as said above, no protection from the elements. Now, Rhinoguard should be properly compared to the application of any other high performance coating that air dries, with the exception of latex products.
Care needs to be taken to avoid lap marks.
If more than one coat is applied, the first coat needs to be bone dry, not just dry to touch. Unlike the junk materials, surface preparation is important. The area to be coated needs to be cleaned thoroughly. While the semi and non-drying materials will usually adhere to grease, because they are close relatives. Rhinoguard, like any other high quality product, will not.