Should we be training each technique in a left and right stance?
Yes. In the instructional videos, we often just use the power side, which for me is a left fight stance (right handed). In your own training and practice, it is beneficial to balance your body out better, and work both sides. This in its own right can create a better control and equilibrium within your body. Of course, when it really comes to a fight, you will most likely use your power side.
Another example would be when you say do 5 reps each side for straight punches for the exam – do you want us to just do 5 jads and 5 crosses with the same stance?
Go ahead and do 5 jab/cross combinations in the left side stance….and then 5 jab/cross combinations in the right side stance. In total that is 20 individual punches. This allows you to work every “possible” straight punch.
Just one other thing, in the mastery drill for holds and chokes should we be doing combatives after holds because wouldn’t you need to move back in after making space?
The safest habit to create after escaping any hold or choke, is to immediately follow up with combatives. Even if it is just one strike, possible two. You want to escape, strike/strike, then disengage. There are certain circumstances, such as a wrist grab escape perhaps, where you can escape and run, this can depend on your environment, the proximity of outside help, and the extremity of the situation. But, a general principle of krav is to add counter combatives during or immediately after an escape to render an attacker less capable of more force.