How to do it like a fish.
There is very little literature on the topic of training UWR, most clubs build their training on the base of trial and error and try to learn the methods of other clubs. This training concept may be helpful for new clubs in developing their own training methods.
"The more complex a movement is, the more it's worth to take it apart to it's elements in order to learn it. Googles and snorkel are required so that breathing, which coordinates the whole process, can be left to be practiced at the end, while fins are to aid proper body pose and technique. The board allows the movement of legs and arms to be practiced separately, and I've noted swimsuits too, because too often you see newbies wearing beach shorts at the pool which act like flimsy breaking chutes in the water."
By swimming like a backstroke swimmer coming on the wall with just enough space for the dolphin kick below, most of the blind spots disappear.
Little help with taming the waves.