Just a thought, flapless or clean, if you have a strong crosswind (demonstrated limit or above) and you are using the crab method then is it not stupid to aim for a slow speed (near the stall) on touch down. My reasoning is that if, when you kick off the drift, you have not got enough rudder to straighten up and then have to go around then you are relying purely on the engine for acceleration. You are already at a height that does not enable the nose to be lowered without causing you to land, you are also drifting sideways across the runway, either way unless you have bags of power available then it is all going to get rather nasty. Of course the slower you are going the less rudder authority you will have anyway. Always better if possible to use the wing down (in my humble opinion) then at least you can fly it all the way onto the ground and know in advance that you are able to deal with the crosswind.