Same spot. I found a nice spot there where I could jump, kill both before I touch the ground, jump again causing them to respawn, kill both on the way down, jump again causing respawn, kill both.......I also got pretty good at getting them quickly at the end of 3.

5 I didn't really get much that run. I ended the level with about 50secs left. There are birds at the end, but it was hard to kill them with out taking damage after a while.

Haha, yeah, I got 55,000 - 60,000 in stage 1 alone because of that.

 

I only managed to pull off 33,000 something on those enemies, but then I moved on to soon, probably should've chanced running out of time then instead of so late in the game like I did.

Yeah, I think I waited until the last 65 seconds to get to the end of the stage. My problem was that I couldn't find spots after that (and the ducking and killing the knife throwers over and over in stage 2 really hurt my thumbs...)

I guess we were on the same page racking wise.

Got the exact same technique for stage 4.
Level 5 was nothing fabulous. I just kept respawning the few 4-5 fishes at the start before the timer went to 90. Blue birds at the end were too much hassle to avoid, and shoot to care about.