Hey Guys. I haven't entered the soft wash game yet. I mostly pressure wash concrete driveways, patios and decks. I plan to get into soft washing once I learn more about it, with the intent on doing vinyl siding and concrete/block buildings, as well as the decks and driveways. Everyone seems to be in the soft washing game and I was wondering if I could use SH and a surfactant in a pump sprayer to do a Trex deck? I know I can use the SH, but is there any reason I could not achieve soft wash ability through a pump sprayer, just to do a deck? After this large job I will be purchasing my first system and will be getting lots of practice (Family and Friends homes). Thanks in advance.