Create surface from points


I’m having trouble making a surface from points. I asked in other posts and tried all of the solutions but I seem to have a problem, solving it.
The “surface from point” component also doesn’t work as I cannot define the U count properly.
I also tried patch but due to the number of points it always crash and if it creates a surface it gives me many surfaces that are not relevant.
Below is the screenshot of what I did manually by patch in rhino. But I need something similar in grasshopper where I have more control in creating the surface.

13 APRIL 2019 - surface from (61.0 KB)

Many Thanks,

Surface from points makes a surface. What you have there is not a surface, it is a trimmed surface.