lots of elbow grease required...but...the results are worth the effort...  my boat is in a shed and the birds do their business  while roosting...  meguiars removed all the poop stains and once waxed, the poop washed off without any effort without leaving a stain...  the oxidizer remover works great...i can feel the roughness disappear while rubbing the liquid in...that's how i know the oxidizer process is completed...  once the oxidation process is completed...the polishing and waxing go fast...rub on and wipe off...  btw...buy the restoration 3 bottle kit...cheaper than buying individual bottles...  they're all 16oz...