Putting the anim in a mod folder never worked for me, I have to put all of them in the addons folder.
Also, the mission could just be a camera looking at something for eternity, it doesn't have to be fancy. But, IIRC, you do have to edit the island's config so it knows where to find the anim. It is actually quite simple, you just have to change one line to tell OFP where ot find the anim.
-Student Pilot