@Uwek Dear Uwe. I fail to see the issue with single planking and why "you have to live with it". For sure, double-planking makes it easier for the modeler. but that does not mean that single-planking is any way inferior to double-planking. Real ships were not double-planked. And, I have yet to see a POF build that utilizes double-planking.
This is not a POF hull but a POB hull, on POF hulls a double planking is making no sense.
On POB hull usually / better say "often" the avarage modeler is getting a better result on the visual planks (planks with joints) when you make with a first planking (not visible) the correct
form of the hull (also after filling and sanding) and with the second planking (usually thinner) the correct planking pattern (with stealers, spiled planks etc.) . With the first planking you have a closed hull where the second planks have full contact over the complete length of the plank. On a single planked hull you have only the contact with the bulkheads, or you fill all gaps between the bulkheads with filler wood blocks (f.e. with balsa) to get a full hull form...... and you have to work from the beginning much more accurate and you have to plan your planking (with Thicker material) very well from the first beginnbg with the wales.....
Your sentense "Real ships were not double-planked" is correct, but in ship modeling in my opinion not realy helping. Real ship have also no bulkheads. But real ships would be planked with Oak, which you would not use because it would be outscale.
Here some examples how planking was done on real ships
On this kit the planking is covered with paint, so the pattern of the planking is not very important, so you will have only a first and single planking, which has to be sanded (and maybe filled) and afterwards painted.
But maybe some modelers do not want to paint their hull - they have to life with the single planking, but I guess, that the quality of the kit material for the planking is not the best (because Artesania plan to paint the timber.......