Strip the boat of everything. Most fittings and all electrics to be replaced.
Remove the rear deck.
To seperate the deck from the hull. I carefully used a jig saw with metal cutting blade to get through the stainless staples used to fasten the deck and hull together. The backwash well was'nt realy bonded with the transom very well and seperated with a fair go of prising and persuasion. Thankfully.