The best way to stop in the wet is the same as the best way to stop in the dry: Threshold (threshhold??) braking. That is, braking at the tires' limits-- just before the wheels lock up.
Pumping the brakes is only useful if you've already locked the wheels up.
the ULTIMATE way to stop fast in the rain is NOT to drive fast in t he first place. <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/wink.gif" border="0" valign="absmiddle" alt='
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