If you have trouble designing your kite test, consider the following:
How do lift and drag vary with changes in kite design features?
(1) Aspect ratio
(2) Cant or bowing
(3) Angle of bridle relative to kite
(4) Lengths of different parts of the bridle
(5) Size of fins
(6) Length and weight of tail
(7) Placement of tail
(8) Venting
(9) Width of kite (or changes in one of the widths)
(10) Height of kite (or changes in one of the heights)
Or think of your own!