I haven’t found your board, but I do have some tips for dragging back to the board.
A)Depower your kite on the strap if you are maxed out.
B)Really extend your body out and get that hand deep in the water, you have got to act like a keel on a boat to get the resistance to drag back upwind.
C)To go upwind even more dip your whole head and body under the water, you will be surprised at how much difference this makes.
D)Be real careful when changing direction bring the kite across the top of the window real slow so you don’t get plucked down wind and lose all that ground.
E)If you have lost sight of your board count while you drag in each direction. For example drag right and count to 20, turn around drag left until you count to 20 this will put you back roughly in line with your board.
F)If your board is strap down it will drift down wind slower.
G)As soon as you stack it get that front hand in the water
Hope that helps…

shane