Full swings are not essetial, but remember that the harder you swing the further it will fly AND have more check.

Tempo is not that different then a normal flop shot, so don;t think too much about it (i.e. don;t "change" your tempo just because you are in a trap).

Ball position is forward (near the front foot).

But my bet as to why you are going low and long:
2 things:

* Alignment - Must be "open" to the target. Feet, hips, shoulders and swing path all are open. Club face however MUST be pointing at your intended line. So this creates a "slicer" look in your eyes. How much you are open will generate the hight, carry and landing affect the ball takes. Play with the angles. 45% is about as open as you want. That will get you very high and short. Square or 0% is what I bet you are right now. So open up to about 15% to start and see what happens.

* Where you strike the sand - this affects overall spin (and carry as well). You want to hit the sand about 1 ball's width behind the ball. The more you open the stance the closer you have to hit to the ball. This is becase the more open you are, the steeper the attack, and the more energy is lost to the sand, and that is bad, not getting enough on the ball and it stayting in.

So adjust, practice and play with these 2 elements.

__________________
I'm a golfaholic, no question about that. Counseling wouldn't help me. They'd have to put me in prison, and then I'd talk the warden into building a hole or two and teach him how to play. ~Lee Trevino