Further to my recent, I have now discovered 'The Fully-Framed Model, HMN ('N'?!) Swan Class Sloops 1767 - 1780 Volume 1. by D Antscherl. This is a really excellent Vade Mecum and will de-mystify the incredibly vague kit 'instructions'.
Regarding Ship's Boats I agree - although I think I am right in saying that they were not usually shown on Admiralty models - the lines of a longboat, cutter, pinnace, jolly-boat et al were not a subject of discussion for their Lordships. Incidentally, on occasion King George III participated in their discussions himself and provided an informed opinion. He was definitely not 'mad' - that sobriquet was promoted by Lord North and his ministers who caused and supervised the loss of the Colonies. Well, imagine that. Politicians concealing their guilt from the gaze of history.