Are there any panty vibrators that are suitable for use behind a strap-on dildo?

My strap-on has a pocket on the strap-on to hold a bullet vibrator, but I think I need something more powerful than a bullet vibrator to orgasm. Is there a flat panty vibrator that I can use between me and the base of the strap-on? I did try a bumpher product that uses a bullet vibrator to add vibrations, but it was hard to feel the vibrations through the cushioning on the side facing me, if that makes any sense, and the bullet vibrator that came with it was a little weak.

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