I beg to differ on the interpretation that he wPlease note that it says "Ater you perform an attack, you may perform a free boost or barrel roll action."
and quoting the rulebook page 8:
During the Activation phase, each ship may perform
one action immediately after moving. A ship may
perform any action shown in the action bar of its Ship
card. Additionally, certain pilot abilities, Upgrade
cards, Damage cards, or missions may allow ships to
perform other actions. Each of the possible actions is
described in detail over the next few pages.
If an ability allows a ship to perform a “free action,”
this action does not count as the one action
allowed during the “Perform Action” step."
So Turr Phenirr SHOULD be able to boost or barrel roll in his Activation Phase, then attack an then coose to do the free action again, right?