Type in "Koelsch" on the Passcodes screen and the V-wing will turn into a convertible. Warning: If you pause while using the convertible, the game will lock up. But don't worry, just reset the game and the game will be okay.
This isn't a cheat but it isn't a hint or tip either.(You also need the code all ships for every level)
Did you ever try to roll The V-Wing or Snow Speeder but fail.Well I now how to, and this is how.
First of all you need to have got to the level "The Search for the Nonah".
Now, when you pick the level and you go to pick your ship, pick either the Snow Speeder or the V-Wing and when you beat the level the commander will say "Nice work Rouge Leader, get your squadron out of there!" and when you see the ships fly away, your ship will do a roll.