Not sure if you'll still need help by the time this post is approved, but usually keeping the throttle in the blue zone is the best way to get around on opponents, coupled with flight assist off (If you know what you're doing).
Generally I try to avoid boost-turns, as the way boosts are working now they bring your ship up to or near it's top speed. So if you haven't turned all the way around by the time your boost ends it leaves you vulnerable.
If you were in a turning fight you've probably just opened a lot of distance by boosting and now have to shed your speed for a second or two before you can even begin to bring your nose around on a target that's already lining up on your six. It's really an exercise in discipline to avoid hammering the boost button excessively, I really only use it if I need to get out of an enemy's firing line immediately. All this goes doubly so for faster ships with higher top speeds (i.e. The Viper. Pressing boost in that thing brings you up to 500m/s regardless of pips, totally ruins any positional advantage you or your enemy may have)
There is a bit of a trick to using boosts to turn with FA off, but I still haven't figured out how to control the distance on that turn myself yet.
