1) Upgrade to Captivate 3, which is better equipped to do
full-motion slides. If that isn't an option,
2) try planning your project without the need for
full-motion. If that isn't an option,
3) try another product which is better designed for
capturing "dynamic" actions. Captivate really isn't in its own
element doing full-motion captures of any length.
Sorry I don't have better news, tsumpter, but I hope the
thoughts are some help to you.