Yo! As for now, we only have the easy boat that has no monsters, it's just portal killing, so my suggestion would be, when eventually the expert boats will be implemented into the game (if they will), it'd be pretty cool to have monsters in them (the properly working version of pest control), but obviously, have increased points per successful trip 🙂
Also, I'm not sure how the pest control instance work and if it's even possible to have monsters inside only in certain boats or if it's a must be everywhere in case monsters gets added.
So, just a thought! 🙂