Pin a point in the curve with a soft body simulation

Hi

I try to pin a point in the curve. And play with a cloth simulation modifier inside the curves object. I achieve my problems with an other way but i lose the procedural way. it's why i try to achieve that with curve. Is more flexible to design a shape but i can't pin a point. I tried also with a rigide body constraint but don't work.

Here i found a way to do that but not more fexible then curve

Then my proposal Like picture in below.

Tell me if is interesting or not to devloppe. Thanks :D