Drips during the boil won't hurt anything, but once you start chilling you are open to contamination. I remove my hood after the boil, but my fan is to the side and continues to remove moisture from the room.
What about this idea?
I move the fan back futher against the wall....
Remove the current piece of pipe from the top elbow and bowl put a long piece of pipe then an elbow right at the top of the kettle.
So it would be kind of a down/side draft thing and not be over the pot.
Any condensation would sit in the elbow that is not over the pot?
The elbow would be right at the top of the pot so all the exhaust would go to the side then up the pipe and out.