Having some experience here (
www.vimeo.com/user390555/videos youtube.com/user/ynda777) I don't think there is a solution here. The forces involved are just too great. The best you could do is keep steadyshot on and correct any pans in post.
The Meade things are designed for minimizing small vibrations--not the rather huge excursions you're talking about. I'd love to be proven wrong of course.
Hanging a weight is only going to increase the 'coupling' which is exactly what you don't want.