We had thought of putting two stainless steel pipes close together with support on the cockpit, but they fall a little towards the inside.

The inclination of the pillar is necessary not to place anything on the transom because in the future it will be possible to mount the slop version and put the trolley on the boom without problems.

As you know, the boat will be mounted on mast A.frame and then there will be the stern tube that holds the mainsail ...

With the stainless steel tube I have nothing to say, certainly more elegant but it must be mounted like the current pillar. Look at the photo.

Don't worry I'll do my best ;-) the boat owner believes a lot in your project with the A-frame mast (that's why I agreed to build) and he also believes a lot in me, that's why he delegated me on all the decisions to make. He is a Doctor, a very special period between hospital, covid and home visits from patients, he is great!

Ps he told me to tell you that at the end of the construction there will be a brass plate with your name and mine, as well as that you will be invited here in southern Italy.
ciao