Like most players, I had a LOT of bad luck with the 901. I lost 4 fleets, all of which I slow repaired, in this target. Yet, having cracked it, I can say that I felt a great sense of accomplishment.
I tried all 5 Dragoons, dead Splitting fleet, sunk. Switching between 4 dragoons and Scoundrel, sunk. This method WORKS.
I narrated this video so you can understand more clearly, but the method you want to use is sending in the Scoundrel on the left side to kill the Pluto cannons, and then using your Dragoons like normal on the rest of the target.
Before you comment about coining, upgrades, or how you hate this target, give the video a watch.
Oh, and feel free to share this. I haven't seen any other videos with this method, and honestly none other of this quality.
As I'm posting this to forums, credit to The Vengeful One for telling me to suicide my Scoundrel.
When I am not helping people on forums, I run a YouTube channel. I focus on actually helping players in the game. I respond to every comment on there, so it is the best way to find me. If you want more info click the link below.