I play most of my games when it's raining, but thats because we prefer a jungle type setting. Anyway, we setup poncho's in concealed position's and then set ambushes while we wait for more guys to join. It's is a relly fun way to play.
We get super dirty, but I love it. Crawling through the mud, moving through the pucker brush, dashing through open area's, covering the squad area, ect..... We crawl through the large pond type water resivor's that collect in the feild (Ya I know sound's foolish).
Anyway, we have a good time and thats what counts.