New to Grasshopper, trying to make a solid object.

Making a shape for a spaceship project.

1. 3 Curves, centerline curve and a curve to either side. Supposed to make the wedge with a rounded nose.

2. I loft the center and side curves on each side.

3. I patch each side curve.

4. Now trying to figure out how to join them into a solid polysurface (Think that's what I end up with in normal Rhino modelling).

5. I can get the loft and patches to work, gives me 2 trimmed surfaces (side), and 2 open breps, but I cannot for the life of me figure out how to join them all together into one closed brep.

Included the basic blocks I tried to get to work, as well as a shot of the model showing 1 side loft, you can see the gap on the side, which is the patch. Trying to get all 4 to join, is this even possible.  Just started using grasshopper today.

Basically am trying to do as much in grasshopper as I can so I can get around the destructive booleans where you always have to save like 10 copies of everything and if you do something that doesn't work you have to back up 6 steps.