Hi Lars, another possibly thing you could try is to attempt to build a larger surface and then trim it, that is basically what Patch actually does as well.

So for example, I created this more regular outer boundary:



Then I drew in some guide curves using Draw curve / Freeform / Through pts:



Now you can select all these curves which form a regular grid layout:



And then run Construct / Network to build a surface through them:



Now Trim that surface using these as the cutting objects:



Select these regions to remove:



Which leaves you with this result:




The tricky thing with this method is getting enough guide curves placed so that the Network surface comes close to those trim edges.


Once again though, I still think you're better off using Patch rather than this method.

- Michael