Algodoo

One of my potential upcoming scenes uses several hulls of circles of unequal size, and so getting tired of not being able to do such a thing, I decided to come up with a method for doing it easily!
It isn't perfect, as it requires a little bit of eyeballing, but scaling up your circles while making the hull can double the accuracy, and even without scaling, it's already really hard to see any defects in the final shape.

Let me know if you find this useful, and if you use it for any of your own scenes, crediting me for the method would be appreciated!