Delftship - Tutorial 2 - How to add a Rudder Trunk

Adding appendix to an existing surface using Delftship software.
The process starts by using the "subdivide control net". "Keel and rudder wizard" is used in this example.

[othernicksweretaken]

Hi Stefan,
I know this video was published almost five years ago, and I'm not sure whether you are still active in this channel and occasionally have an eye on comments.
This video was pretty instructive to me and I am bewildered how quickly and with what ease you inserted into or attached a new skeg body to the tug hull.
For me this would have taken much more longer.
I would like to ask you how I can achieve to add appendages like bossings and struts to a twin screw hull?
Well, I figured out, how to insert or attach a shaft by selecting from Tools Add Cylinder and providing the coordinates from start midpoint and end midpoint as well as the radii of start and end
(n.b. usually at the end, where the shaft protrudes the hull's shell, its diameter is a bit larger than at the beginning where the prop is attached - beginning and end according to the origin which in my hull models is always the aft perpendicular or the axis of the rudder shaft).
I cannot fancy how to incorporate the delta-shaped strut plane which connects the shaft's bossing with the hull, and thus supports it.
I know that you only can extrude boundary edges, which to create I would have to cut the cylinder of the bossing.
Or would you create a strut plane by adding a box from the Tools, that is such oriented to intersect both the bossing cylinder and the hull?

[ΒαγγΣτανιος]

Just a remark:
This is not a Rudder Trunk. The Rudder Trunk is the opening on the hull from where passes the Rudder stock.