At the risk of injecting a serious note into this discussion, I would like to differ slightly with the OP. I think it did me a great deal of good to read the class reports (and I read all I could find). But I am also very glad that I didn't spend time trying to get the kicks on my own, because I was doing them quite wrong, and would have thoroughly learned a motor pattern that would have had to be overridden. Research done on athletes has shown it takes something like 2000 repetitions to solidify a pattern, and something like 10,000 to change one. Better right the first time!
The best things I did to prepare for Fundies were things to work on my buoyancy control -- practicing mask skills and regulator exchanges while hovering, and doing ascent drills. You pretty much can't learn those things "wrong", and buoyancy control was one of the two truly fundamental, underlying ideas for me from Fundies.
And the only underwear discussed was quilted and made of Thinsulate . . . but mine is black!