Something that always seemed hokey
In several episodes Mike was supposedly fighting against terribly strong underwater currents. The stuntman would twist and writhe around, but he was the only thing being "affected" by these currents. Everything else would remain relatively still: weeds, sediment, fish--even his air bubbles would rise lazily in a straight line.
I always wondered why they couldn't have used a machine off-camera to create a disturbance so that it would look a bit more realistic.
It is better to be kind than to be clever or good looking. -- Derek