well its been a long time in coming -- took my son's desire to give mx a try and my fear of putting him on a track w/o some prior experience. the first 125-cu-yds of dirt will arrive saturday morning. any advice what to build first? thinking of a small table top, some whoops, and burming some turns. nothing serious as our overall track is only slightly over 1/2 mile (flat) - may be able to expand to 3/4 mile and still keep some of the green in the fields. i think this should be large enough to give some technical practice.