Hexagopn works great for UV mapping. I love it's Unwrapping tool. Most of my stuff is UV mapped in HEX.
In a nutshell, on the mesh you define seams where to split the UV map into pieces. Most often, these are in the same spots RL clothing has seams.
Then You run "Unwrap" UV's, and let Hexagon stretch the pieces.
Sometimes there's a bit of trial and error till you find the best place for the seams.
After that you do some tweaking and arranging them on the UV Unit square.

I think I saw couple good Hexagon related vieos on YouTube, and something included with Hexagon. (Going from memore about the video, so I could be off)  There could be one or two at DAZ too.

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Renderosity Store  Personal nick: Conniekat8
Hi, my name is "No, Bad Kitteh, NOO", what's yours?