I play woodsball every so often at one of my friends house. We play on a stretch of land that his brothers turned into a bike course a couple years back. It gets pretty intense with the all the good cover. There's a field adjacent to it that is used to flank the enemy, good tall grass to sneak through. Never played flank, though.
We play speedball more often, last time I went was in January for my other friend's birthday. One game we played against 3 adults who played on a team with about 5 decents guys and 2 newbs, the guys who were supposed to go to the sides were so scared we all stayed at home. I was supposed to get home, so I yelled at them to go out. Maybe one or two went out, but we just got slaughtered by double-triggers.