For the Moilas, just hang out as far to the right side as possible. They only go so far...
Then they turn around and leave. They never go to the very edge of the screen. The only thing is, after the third wave, you'll want to move back to the
left a little because you could get hit by an upcoming enemy.
The Harpies only ever attack on these screens with the red brick walls. I've mentioned on my site before that flying along that wall protects you from the
Eggplant Wizards and Totems above. They can't get to you and the wall absorbs their bullets. What I DIDN'T know before is that if you hang out in the
VERY bottom-left corner, the Harpies can't get you either. They just go right over you.
It'll be a very tight fit, but if you're in the exact right spot, trust me, they go right over you without doing damage.
Everything else is pretty easy to dodge once you know what to expect. There might even be more safe spots from other enemies but I haven't thoroughly
tested yet.

Got Shnoo?