Solidworks Surfacing with boundary surface by using extruded surfaces and 3D sketch splines

Review how to make complex boundary surfaces in Solidworks by extruding the profile, trimming each surface from the top, connecting with 3D sketch splines and finally building the surface using a boundary surface. The extruded surfaces are just used to create the boundary. This method lets you have maximum control over complex surfacing.

[@fraglo]

Great videos, I enjoy watching them! I also like replicating in other CAD systems. I.e. Creo

[@trexinvert]

Very nice and quick. The "taught" way is to surface loft with multiple sketch planes.

[@betsybarnhart6033]

This is how I build all of my compound surfaces, it's super efficient and easy to edit.

[@trexinvert]

I was reviewing this, again, would using "style spline" allow you the same control?
Hope you have a quick answer, I'm too lazy to re drawing with style spline..
BTW, I was trying to use 3D sketch to create a triangular pyramid.
1. So, I accomplished this in a single 3d sketch. Cool, right?
2. Then I "tried" to use planar surface = fail.
3. Then I "tried" to right click for the "selection manager" = fail.
4. WTF, my conclusion is that 3D sketches are waste of time when surfacing, because you have to create a single 3D sketch per surface.
5. Only useful thing about 3D sketch is to create a splined connector line between surfaces for defining a guide line.
Can you think of any other use for 3D sketch to assist in surfacing?