Boulders are easier said than done. A 3'x3' rock weighs about a ton (or more depending on the density of the rock)...2000 lbs. Your 1/2 ton truck is not rated to carry it.
Rocks destroy dump trucks so only a few haulers will tote them.
This event is in it's infancy and is doing great as it is. The promotors and sponsors will make it better each time.
I didn't even know it was for a cause, that's great.
Let me sell my parts for 10 bucks, order food from the hottie blonde and I'm good to go!
RQ