In many ways the Deca files like any quad line kite - pull on the top lines, the kite moved forward, pull on the bottom lines the kite goes backwards. The difference is: a) how it steers, and b) how it can be flipped on it's front and back.
I have found that there is very little pull on the lines even in a strong wind - this takes a little getting used to, if you are used to flying a Revolution as there is much less feedback on the flying handles.
If you pull back too much on the handles the Deca stops it forward flight and falls onto it's front (pointy wings facing up). The kite then starts falling back to the ground - still face down. To recover you can do either:
The problem is once you have flipped the Deca on it's front it will float down (i.e. fall) very quickly, so you have very little time to recover.
But since Deca's are, well, bouncy usually the kite will simply bounce back up. No flyer input needed!
One of nice things that I never tire of is doing the old 'Dive-Stop' thing - fly to the top of the window, rotate the kite round so it's leading edge is facing the ground (or what passes for a leading edge with a Deca!) then fly full speed to the ground but putting the brakes on at the last minute to have the kite hovering just above the ground. This works with any Quad line kite (especially the Rev) and of course the Deca (although not as 'snappy' as the Rev). However with a Deca you can do something different - When the kite is coming full speed down to the ground rather than applying full brake, apply full top line (like to the Forward Float). But instead of flipping the kite so the wing tips are towards the sky (as in the Forward Float) instead you actually get into the Backwards Float where the wing tips are towards the ground.
This take some practice, not least because it's somewhat counter intuitive - applying full speed towards the ground - something one does not do when flying a Rev (at least not twice).
Timed right it's a very pleasing thing to do. Timed wrong you have planted the kite into the ground. Again.