I've been doing a stack of 07 rebel self launches recently.
My routine in moderate winds-place kite on LE down on beach with a bit of sand on it, rotated into the wind so the back wing is opening up but kite is not quite drifting down the beach, walk out to slightly upwind about 110 degrees to the wind (only the safety leashed, not hooked in) with moderately depowered trim, once lines coming to tension, and I am sure the lines are ok I hook in with the bar out, walk upwind slightly while tugging the back steering line to rotate the kite around on the spot till the back wing fills up and the kite starts to want to roll onto the wing tip, then (the special trick

) you need to walk a little towards the kite and downwind again for it to fill with air (still with bar out) and roll right onto the wing tip, then keep moving a little in the downwind direction while starting to steer the kite up with a bit of sheeting in to get it in the air.
Wow, that's hard to describe!
I think attaching the chicken loop to a car/fence/big weight system may be easier, but havent really tried this yet.