You have very interesting ideas Oliver. I like this.
I saw a similar use for Proxxon FET as a side cutting sled, these profiles have many applications, they need to be used.
Yes, the profiles are very useful. But not cheap. Good is, that you can build very fast a other useful tool for a different situation. If you have enough parts....
The "crane" for marking inside the hull is great
also the small clamps for fixing the "plank" (for markings) are very good - is the Gewindestange passing the small distances between the frames?
Maybe you can show us once such a clamp with all the elements dismantled?