I do have an AVX mount that I can put my camera on. I will try that next.
I have a few questions about using the AVX:
How much better a photograph can I expect with tracking? Any possibility of seeing any detail on Jupiter?
How critical is polar alignment when shooting with a 300mm lens?
Any recommendations for exposure if I am using a tracking mount?
I think you'd be asking too much to get any detail with a 300mm lens, but trying different combinations of camera settings might work. You did very well with what you have. Jupiter is so bright longer exposures aren't necessary. I might try stopping down the lens a bit and taking several shots and stack them.