If you read patchnot , dev say clearly they won't anymore have the rageboarding with pushing a ship front of the wind.
Rage board is fun killing actually. Should be used after you make some dmg in the ship and not like a GOD MOD like lot of player us it for a long time.
You want board a ship, aim the mast , destroy the ship ,ect ect , like in reality a ship never get instant board in a fight , you need to take advantage in fight first