I am no expert but will try and answer your questions.
The mast lower section is controlled by a Ram (or mast mover) that works off a series of blocks or an actual mental rod attached to the mast just below the deck
This allows the mast butt to be pulled back and allowing the top of the mast to lean forward off the wind
. It gives you much more speed down wind
by allowing the jib
to be trimmed without being blanketed by the main. However this must be released when heading back upwind and applying runner tension because you will break a rig.
Starboats have been built in Italy
and the US however vintage accounts for more differences in setup than make or country of origin. I have owned 3 Stars in the past and they all had shroud
attachments to cars on a tract that ran along the deck. I think the older boats may have had a simple eyebolt that you describe. The newer boats are much easier to sail than the older models but that is to be expected.
You are getting into a boat that you not only trim the sails but also the rig.
Also lowers that are too tight will keep the spreaders from falling back so make sure your lowers are loose. In fact the rig does not need any lower tension except in the lightest of conditions and when by applying your lowers it simply powers up your main. Otherwise sail with upper tension only.
Do you have sails?
There are a ton of used star sails around so you should not have to buy any.
The boats are fantastic to sail and it is no wonder some of the best sailors in the world come out of the star class. I know first hand because I have been beat by most of them.
It can serve you well as a day sailor if you take it slowly and begin only in the lightest of winds.