prepping for Por 15 without the marine clean step
does anyone know of any alternative to using the suggested marine clean? We have a quart of POR 15 and am wondering what I have to do to keep it from sheeting off. I hear you have to leave a little rust on it to bite into. Getting a mini blaster and am eyeballing this pitted trunk drop off on a 55 300 and am scared to blast it and then apply The Por 15 if it needs rust to bite into, but I'd like to hear more opinions on getting this stuff to stick before I take the word of one man. Any opinions greatly appreciated and if I can avoid the marine clean that's great.