The Slim Chance is one of the fastest handelpass tricks I have ever learned while kiteboarding. It took a grand total of 2 days to get it down. The hole secret was to do them the oposite way of what I had previously done. Using my strong arm (right hand) to hold the bar and passing it to my weak arm (left arm).
A tiny guide
1. Ride alittle downwind and unhook (i still keep the kite pretty high on theese ones)
2. Take off by throwing yourself into an inverted frontroll
3. Try and bend your backleg as you start to get fully inverted
4. At the apex concentrate on having the bar close to your hips and push up with your backleg
5. Turn around and reach for the bar on the other side
6. Hold on like crazy on the bar if you go to high, cause it will try and snap out of your hand
7. Bend your knees to absorve the landing