This probably won't be any use but what I do is;
1) stick (glue) all the planks, margin planks and edging around companionways/cowl vents/anything that's 'planked around' to a piece of ply to fit the hull/superstructure roof etc.
2) mix a very small amount of black poster paint (in powder form) with water (to make 'dirty water'), dip a rag in it and wipe all over the decking.
3) give the whole lot a couple of coats of sanding sealer - ensure the end grain (of the planks) is sealed!
4) mix enough poster paint in PVA adhesive to make it into thick black gunk and spread it all over the deck with a piece of styrene/old credit card etc, working it into spaces between planks (sanding sealer should prevent actually dyeing the wood black) then wipe excess away with a damp rag.
5) sand the whole lot smooth (the planks I use are lighting tapers from tobacco shops and are varying thicknesses) which leaves almost bare wood with caulking between the planks.
6) stain it again with the dirty water solution, then make tea and wipe tea bags all over it to give a brownish tint (could be done with brown poster paint I suppose but I didn't have any...)
7) finally, seal with several coats of sanding sealer/matt varnish.
The result should be that, as the planks are all seperate and have different grain, no two look alike in texture or colour;...
