QuoteQ: When a player wishes to perform a boost action, can he measure to see if his ship can perform a boost before committing to this action (similar to a barrel roll)?
A: Yes. In formal and premier events, the player must declare the direction before attempting the maneuver (see "Performing a Barrel Roll" on page 6).
This is confusing. To me, the "Yes" is saying, "Yes, you can measure before committing to the action", but what is said after, is clearly a "no". (from pg 23 of the FAQ)