Because you need to destroy three within one match, it's important to locate the hiding places as quickly as possible at the beginning of the match. There are certain areas of the map where it's easier to find them than others, so choosing your landing point carefully is an important part of the process of completing this challenge.
Destroying these hiding spots is also beneficial to gameplay because while there's always the chance of being ambushed outside a hiding place, removing them from the field increases the visibility of your opponents.
To find these hiding places, you'll want to look for areas with lots of buildings because there are often dumpsters located nearby. These dumpsters are easy to destroy, and once you've located three of them, you'll be able to complete the challenge.
Pleasant Park is a popular dropping point if you're looking to knock out the three hiding spots quickly, as there are many in close proximity to each other. That being said, it's also possible many others will have the same idea, so be careful when starting the match that you're not dropping around many of your opponents.
The Pizza Pit, the Orchard, and Catty Corner are all other places that have an abundance of hiding places near each other, making them other ideal starting points.
Destroying three hiding places might not be one of the easiest challenges you'll have this time around, but once you familiarize yourself with where these places are throughout the map completing the challenge will be simple.