Controllling Drupal's active/active-trail with duplicate menu items

Question

I'm developing a site that requires some duplication of links within the menu:

Section A
-- Introduction
-- Testimonials

Section B
-- Introduction
-- Testimonials

Testimonials
-- Section A
-- Section B

So 'Section A > Testimonials' and 'Testimonials > Section A' point to the same node. But regardless of which menu link people use, I want the person to be in Section A.

The problem is that D6 doesn't like duplicate menu items, and it assigns the active and active-trail classes rather unpredictably.

So my thought was to create a placeholder node for each item in the Testimonials menu, and then set the URL to something like "testimonials/redirect/section-a", and then use mod_rewrite to redirect over to "section-a/testimonials".

With this solution, I will have no duplicate paths in the menu. I'm just hoping this doesn't somehow hurt my SEO.

Does anyone know a better solution?