Well, I am sure my daughter would agree, since it was her best tactic!!
I think if I were to make a house rule to go with it, I'd allow it if the combat move value was halved before you used it.....So if you are normally allowed 20 cm, a 'shoot and dodge' move would only allow a total of 10cm....Move 5, get off a shot, move 5 back to cover.
I'm actually pretty new to gaming anyhow....I'm familar with several different rule sets, but have really never really played much at all....