You have to select a boat first and than click on the card. Extra Fuel can now be clicked once every 10 frames (I had some problems with it  being used twice, this caused the effect to double as well).
You have to select a boat first and than click on the card. Extra Fuel can now be clicked once every 10 frames (I had some problems with it  being used twice, this caused the effect to double as well).

Far0/Battleports