Both of the above solutions are great but this is how I got this chevo.
Go to the Glider Challenge number 2#, accept it and right after start of that challenge and you will see a blimp right ahead of you but you will notice that it is somewhat far away. Instead ignore it for a second and make a 180 spin and you will see a second blimp just right behind you. Destroy that first and then go for after that first saw blimp. Yes this challenge has 2 blimps instead of one !
After blowing up those 2 blimps, just crash you're glider to the ground and accept continue (press
button). You will then re spawn right next to that challenge marker and those blimps will re spawn too. Accept that challenge again and just rinse & repeat afterwards.
Hopefully this one helps, cheers !
Edit 1: Instead of 360 spin, it is now 180 spin. Thx for RAVIOLICAPONI for correcting this.
Little extra tip from CHUCK NO7715; " - instead of simply crashing each time to respawn/restart, have a look around the area and look for Fizzco neon signs or Fizzco balloons and glide through those also. Helps bump up the numbers on collecting these items at the same time as notching up the blimp destroy task."