Hope the trails weren't overly wet. Riding in wet or rainy conditions damages the trails.
I have to disagree to a degree, as the river-type erosion from washout/runoff ruins the trails and makes that portion difficult to pass and/or ride through. One person on a semi-wet trail does not damage a trail to a point of making it unrideable.
PS - the trails were not even soft. there was one section of rollercoaster that was flooded, but it was the soft sand in the first 10th of a mile...hope I didn't ruin that soft sand portion by riding through it
PPS - I wonder what people who ride in Seattle and the surrounding wet areas of Washington and Oregon do?!?! I mean, it rains constantly there. They must only get to mountain bike on trails 2 weeks out of the year then if they avoid trails that are wet or don't ride during the rain...either that or their trails are totally wrecked and completely unrideable