Boat Designer | Reverse Engineering

How does the process work for those of you skilled in boat design or reverse engineering? My aim is to start from an existing hull construction and then invest time and effort into designing and visualising all other aspects, such as cabin, deck, storage spaces, interiors, exteriors, and so forth.

My reference boats regarding hulls are: IRON 827 Coupe – Boats – IRON Boats and https://xoboats.com/xo-fleet/dfndr-8/

What steps would you take to easily replicate the hull if you only have basic dimensions and cannot measure an existing boat? I need tips from those of you who are quick and efficient.