Here is a version of Builder Hall 9 that I have tweaked to make it more effective against 3 stars, especially in terms of trap placement and also how minions work in defense. If you own a level 9 builder, this base will also help you withstand attacks and get as many victories as possible. With this Builder Hall 9, I've stood at 6000+ cups last season.
NOTE: You can clone the base directly using this link but please understand that obstacles will prevent buildings from being placed - if your village has grass or other obstacles in your base By yourself, you may have to manually rebuild works like the base sample above from the image we provided above. Link copy me below. Don't forget to leave feedback about this base template.