Hello Lia,
I know exactly how you feel as I have recently finished planking the hull of a sailing boat also by Billings. The instructions are TERRIBLE and that is being polite! It is my first ever timber boat build from a kit.
It seems from your photos that the hull is built in two halves as mine was.
I would NOT glue the two halves together before planking as I think being a newbie the possibility of ending up with a warped hull are increased.
Which kit do you have? IN the back of the instruction manual under the heading of Table contents' (list of parts supplied) does it list two different size strips marked 'planking strips? Maybe the thinner ones are for something else such as the rails.
I think building the hull in two halves makes it a little easier to prevent warping BUT I suggest that you lightly nail each 'keel' to a piece of timber (you probably have one supplied in the kit) as this will help the keel from possible warping. Obviously the nails will need to be removed when they get in the way of planking so works out where best to place them. Even though I did this I found that when I had completed the planking and needed to glue the two halves of the hull together they didn't come together perfectly and I had to use a lot of strong rubber bands around the complete hull while the glue dried.
Also apply each plank in its full length rather than in pieces as it will be difficult I suspect ensuring a nice smooth flow along the length. See below in advice when planking.
Will the hull be painted when complete? If so don't be too worried about leaving minor gaps between the planks as they can be filled later.
Advice when holding planks to the ribs. I used a combination of small fold back clips (used to hold sheets of paper together) clipped onto the ribs to hold each plank hard up against the previously attached plank, as well as push pins (pushed through the planks and into the ribs (don't worry about holes left as these can be easily filled later) and rubber bands.
Edited By John Arnold 3 on 09/02/2018 10:49:10
Edited By John Arnold 3 on 09/02/2018 10:51:34
Edited By John Arnold 3 on 09/02/2018 10:56:06