Soft Selection

Hi,
I have one question regarding soft selection.
I i activate it, and press Ctrl key, i see this 3D lasso that is indicator for selection radius. see screenshot
but i cant manipulate it. What tool is it?Is it possible to assign different hotkey to it instead of Ctrl?
What i looking for is by holding button pressed,define the radius of soft selection.
Thank you in advance

What i was thinking , is like combine this 3D lasso, and StreamLine Tool WMB Scroll Simulator (because i use tablet) to control the radius of soft selection.

Once the streamline tool activated and mouse button pressed to activate the basic streamline tool, use Alt+Drag before or during the transforming.

Have you tried the brush tools? They could be better tools for organic objects.

cool, never used them before. They working very good.
Basically it's perfect for what i was looking for.Thx

These two option can be useful for brush tools
  * Edit > Customize > Tools > Modeling Options > Subobject Highlight Enabled.
  * Edit > Customize > Tools > Set-Restore Tools > R_SetEdgeSmoothRendering/R_Restore EdgeRenderingOption/R_HideVertexEdgeInViewport/R_Restore VertexEdgeVisibleInViewport

-------

It would be nice if you can make a video to show how the tools can used.

Thanks for info!
I will play a little time to learn all the features and tool , then i will try to make a short video for it!