I can DRIFT like that however if I'm not quick whitewater usually pushes me around and I have to start over again. Can't seem to get any traction to get tension on a kite lines to dive kite fast enough.
What about if you have a twintip on your feet in identical conditions? Can you create the necessary traction to get tension in the kite lines?
If yes, look at the angle of the twintip board to the water surface. Now try to recreate the same board angle on your surfboard with your feet resting in approximate riding positions. You should be able to create enough tension in the lines to dive the kite.
In light, underpowered conditions with a short period windswell whitewater constantly pushing you around it can be difficult to waterstart. Power in the kite is what is important.
Sometimes you just have to put your feet anywhere on the board and dive the kite. If your board is even close to the right size and shape for you and the conditions it will be very forgiving about foot position and placement when you are waterstarting.