Flower and Bee

I went to Alexandra Hospital Butterfly Trail today just to find this cute little fellow circling around, so I try to capture it using my KM D7D with KM 100-300 F4.5-5.6. After numerous attempt under blistering sun, this is the one that capture the bee in the sharpest. It's not as sharp as I wanted to be, but I may be able to do better next time.

Things that is done right:
- Patience, patience and patience
- Prefocus, since there is no way the AF can follow this litte fella (at least not my lens)

Things that should have been done:
- Use shutter priority or manual mode to capture the bee in its sharpest. Using aperture priority does make the DOF acceptable, but the fast movement cause the blur bee.