Leelan, the weathering stages I would use now are basically, grey wash, salt streaks, rust chipping and streaks, and dry brushing. With some post shading using smoke colour.
I found applying a coat of future between the stages really helped lock the streaking effects in place, especially the rust chipping. You can just spray those areas where the rust is applied.
You can do the stages in any order, but I found the rust started to fade too much under the salt streaks and dry brushing. I used model master rust colour, painted a small chipped area and then using a small touch of white spirit on a q-tip (or a brush worked better for the salt) and drag it down the sides of the hull.
The deck used exactly the same stages, salt streaks included.
Thats about it.