I've got one too for about 12 months now and like you wanted to use it as a light wind board and use it
to learn directional board skills.
The first dozen times or so I left the fins on, then gave it a go with
them off and find it more fun. It goes in even less wind and skims over a few inches of water
and is just more fun to ride. I can make it go upwind just as well.
When it gets more windy or in the surf I'll put the fins back on but not much surf where I am.
As an aside, I decided to take the fins off my larger twin-tip too and find this much more fun too now.