Not sure if this has been said before, But...
The Rotted Fork and Ball O' Hurt are supposed to be weapons to help you defeat their respective biome bosses
The Rotted Fork allows you to stab at the Creepers when they fly at you, as well as the BoC itself, And very likely take no damage from either of them
The Ball O' Hurt, if you're brave, or smart enough, can be used to hit every single section of the EoW... No damage is not assured with this method though
The Vilethorn can also allow you to beat the EoW without taking a single hit if you're careful enough while dealing lots of damage
The Crimson Rod can allow you to damage (and thus send back) some of the Creepers, but is about as useful against the BoC as the Ball O' Hurt is against the EoW when trying to avoid damage
I could suggest an alternative to just copying both weapons from the corruption/crimson with some sorta yoyo or similar weapon, extending your reach towards the Behe-Moth's bindings and thus making atleast the first phase easier, or a weapon that's effective against the second phase
--Editional Notes--
Possible Meelee-type Weapon Replacement Types:
Yo-yo
Boomerang
Possible Magic-type Weapon Replacement Types:
Arcing spell
Or just keep the vilethorn
I think you could keep the vilethorn in there anyways
Honestly, It's all up to you if you take my suggestion(s)