Search for some of 2-plys log crossing video's - he really breaks down the sequence (in slow motion) and also shows/talks about the important 2nd phase of the unload.
In general. the greasier the conditions, the more important the clean technique and exaggerated body motion. You can get away with alot in dry, high traction conditions - so practice in the wet is really a great way to learn. When you do it right, its amazing how much difference it makes. (on all levels)