I can't blame you there but asking us to go out and get our trucks full of mud is not all that practical. As it is, I barely have enough time to be with my wife and kids much less go look for a mud pit somewhere in the middle of nowhere and trash my truck. I probably speak for many of us including you.
Now that is not to say I don't appreciate all your guys time and the ROTM is cool so maybe we can keep it simple. Also, you may want to consider having a percentage of the overall participants rather than just 4 all the time. just a thought.
Regards
Scott