Pigs will run much faster than the actual boost do, if you immediately boost the pig while the pig is walking freely to another way.
Put a saddle on the pig.
Ride the pig.
Wait until the pig is facing and walking to another way.
E.g "The pig is walking to the left"Then, switch the slot to 'Carrot on the Stick' and immediately tap the boost button.
Pigs are suppose to be fast when boost is clicked.