The trick to getting the 5 day challenge is to optimize your launcher and band upgrade levels. Sometimes it is better to go to a lower one to upgrade both even if you can afford the next one up. Also, getting a couple of parachute upgrades by day 3 helps a lot. When you reach peak height crank your booster in one direction and open it up. Hopefully you just collect coins, but if you hit a bumper fire it off again and get a big hangtime bonus.
 "Bloody Fun Day"){kind=icon}
 "SeppuKuties"){kind=icon}
 "Wooden Path"){kind=icon}
 "loops of zen"){kind=icon}
 "Hedgehog Launch"){kind=icon}
 "Bowja the Ninja 2 (In Bigman's Compound)"){kind=icon}