I visited my friend who has a 1975 Sceptre and owned since less than a year old. I was taking measurements of his bimini top and was telling him about the boarding ladder that was available and potentially available. He took me to his attic and gave me the original ladder that had been used only once or twice. He did not like it since it took up room and was always in his way.
Also is a picture of his top and boat
He also told me that these boats were built with a lifting eye that was installed through the bow so the boat could be lifted by the two eyes on the stern and this eye that was installed in the bow. I will get pictures of this contraption, never seen or heard of it before. He still has original helm chairs and tackle boxes manufactured by SeaMark after Potter left Seacraft. I will get pics. Does anyone have more info on the lifting system I described.