Classic genre, well implemented. Except...
1) Need mouse sensitivity controls or for it to be greater.
2) Need an option to invert the mouse. A lot of my crashes are because my instincts are that if I move my mouse down the ship travels updwards (like pulling back a joystick in a plane).
Level 30 is actually very easy. The way the walkthrough does it is not the best way. Much easier just to attach the first wooden bit to the plank in the middle, then, when it falls down, attach the second bit to poke the box. Pure pixelhunt? I did it first time only using 2/3 bits of wood.
Deserves to be rated a lot higher! I can only assume that the low rating is due to competition nastiness? Interesting game, though a bit too short/lacking in features. I didn't much like the last level either.
Of course paper planes can stall. It's not the engine stalling, it's the wing stalling. See: http://en.wikipedia.org/wiki/Stall_%28flight%29
Anyway, easy win: Fly along the ground bouncing off windmills. Only use fuel when you're about to crash.
For those having difficulty in aiming - a good technique it to click and drag the mouse from your tower to your target. So long as you keep the mouse button down it will aim at the mouse.
Both in the TODO list, thanks!