Tool chat: What tool to grip ovalised spokes on Shimano RS11 wheels?

So I wanted to add a little tension to my RS11s to try and stop them flexing into the brakes. I already have a key which will grip the spoke nipple, however there was lots of very obvious twist in the spoke. Unfortunately I have now probably ended up with uneven tension across the wheel as some spokes twisted more than others.

Has anyone any experience with the various bladed spoke tools and suggest one which might work? I haven’t seen one which specifically states for ovalised spokes.

Thanks