Should you use Stretch Bones Properties in Moho Pro???

I answer a commenting protesting my use of smart bones to squash and stretch a character even though bones already have squash and stretch built into Moho Pro. Here is my answer.

[iraceruk]

Howdy bud.
I see your point about Squash/Stretch, but how are you Squashing and Stretching the bones in this video to show the effect different strength settings have? I thought you had to use the Squash/Stretch option with a Smart Bone Dial, but you don't seem to be turning any dials.
You can just use the S/S option to manipulate the bones by themselves to give the S/S effect?
I've tried making a simple ball with one or two bones and turning on the S/S option, but how do I make them S/S if they don't have a dial to change their shape? Manipulate Bones doesn't seem to do anything, and neither does Transfrom Bones.
Still confused!