Hi Paulee,
You'll most likely want a longer dovetail bar with more solid rings. I have a 12" newt on the EQ6, so have similar problems with it wobbling about and taking some time to settle after moving it.
However it's not too bad, a couple of seconds usually. Maybe up to 5 if I bump it badly.
In mild winds it can throw off my high-res imaging but I think it would probably be ok for visual? I don't know.
I got my rings from Orion Optics in the UK. They're custom made and not cheap but the longer dovetail bar definitely helps keep it more stable and solid.
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