Thanks to all, Tigertiger, you are probably right about the true colour of the caulking, and bunkerbarge also. BY, its 4' long, Huntsman 28 (open rear cockpit), circa 1960, 1:12 scale?
THe same as in "From Russia with love". I was tempted to have the fuel barrells in the back, as in the film, but thats going too far (it would however hide some planking and caulking!)
I picked up some sheets of grey plasticard for 10p each at the ellesmere show, looks like I dont need them now!
Paul
PS... Bryan, why would the insulation tape method not work on a model of this size? On the photos, the planks are quite narrow, and due to the deck being narrow there are not many of them, just wondering before I waste any time with the wrong method!