The bike park and downhill / cross country biking is inherently dangerous there is no doubt. The one thing that has always flustered us is watching the Whistler bike park rent bikes to beginners in the rain without warning them what happens when rubber meets stone and wood.
Throughout the spring and fall when the rains come, the bike park still stays open and for those of us who spend a lot of time in there we watch first time downhill bikers rent a bike and head up the lift not knowing what they are in for.
When it is raining or wet and you have never been on a downhill bike, don’t go for the first time. Your tires were slide off all of the wooden structures and rocks and the chances of having a bad crash and / or braking a bone is much higher than normal. We see first timers frequently braking their arms in the wet.