Step 1.) Make a 94 point Dengaroo list. Preferably less points, see step 4.
Step 2.) Add 3 Seismic torpedoes to the list, two of which you put on Manaroo.
Step 3.) Bring 3 debris tokens as obstacles. This is important, because Dengar ignores these.
Step 4.) Take the initiative and you get to place 2 of their (large) asteroids near your side of the board.
Step 5.) Start Manaroo sideways and have her strafe those 2 asteroids and blow them away with seismic torpedoes. Bonus points for using EI to Gonk as you do this.
Step 6.) Dengar can remove the other asteroid, and hopefully get some splash damage in with it. And he still gets to attack twice, and it doesn't matter that he blew his action on the torpedo because of Manaroo.
Step 7.) Now you're free to sloop wherever you want to. Yay!