Quote Originally Posted by JohnnyPC View Post
Do the BM. Each level is just a little improvement, but a max BM will help in all attacks. Attacking without the BM is a pain; might as well get that pain over with now while your defenses are still weak and you're stuck in a lower trophy range. Otherwise, if you wait for later, your defenses will be stronger so they will help you win more, so you'll be at a higher trophy level; it will be that much harder to maintain that higher level without your BM.

You mention doing cannon carts to get Otto, but you also have to do a max BM to get Otto.
Gotcha, sounds like the general advice is to do the BM so will do, thanks!