I recently purchased a 73'. The frame has surface rust, luckily no rot. Was going to grind all the rust off and use either por-15, or an industrial grade rust inhibitor to prevent further decay of the frame, then paint over the inhibitor. Powdercoating & sandblasting is not an option due to funds. Is this the right approach? What kind of paint is commonly used for this application? Anyone ever use paints made by Plasite, Carboline or Briner?