RC Kite long flight indoor

second, longer flight is here: https://www.youtube.com/watch?v=BrT0p4czPxQ
The goal is to achieve long flights with a given battery
(3s 1000 mAh).
Kite material: Skytex 27gr, Carbon 6x5mm, Carbon 4x2.5mm
Power unit: original Premier RC Generation I