How to spread out a dome over a complicated area (Nike Swoosh)?

I'm trying to create a dome on a NIke Swoosh. However, with the dome function I only manage to get a bulb on the straight part instead of an evenly dome over the entire area. Is there a way to get te dome to spread out evenly over the whole area or is there another feature to do this (I've played around with freeform (surfaces) but can't get this working either)

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2 Answers

Freeform can do this but I didn't play around with it much, use Filled Surface with Constrain Curves.
Here is a quick example, you can modify it to your liking.

 
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Not sure what kind of dome you are looking for.
Maybe this will help?

 
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