Greetings Tunacious,
Good luck with the new purchase, and welcome aboard.
The Sceptre/Tsunami originally came with a folding plastic ladder (folded into a flattened parallelogram) here is a recent thread on the matter.
http://www.classicseacraft.com/forum...r=60331&Forum=,,,All_Forums,,,&Words=sceptre%20ladder&Searchpage =3&Limit=25&Main=50274&Search=true&where=bodysub&N ame=&daterange=1&newerval=6&newertype=m&olderval=1 &oldertype=m&bodyprev=#Post60331
More pics may be found on the Literature section of the site in some of the brochures. Personally, I would make a new variation on these and keep you fore-deck intact for a small windlass and aesthetic reasons (say an occasional hottie in bikini)
Good luck.