While he is known for doing all of these things, in addition to being a Life Member of the California 4Wheel Drive Association, his most significant contribution to off-road motorsports sets him apart from others in land-use: educating and mentoring the OHV community.   His extensive background in leadership, supervision, and management has allowed him to mentor many other land-use advocates through his volunteer and leadership training courses and books, as well as his Volunteer Leader and Land Stewardship (VLLS) workshops.  Del has also guided smaller groups, such as 4×4 clubs, as well as  “Friends of” organizations that have modeled themselves after the Friends of the Rubicon, which Del was a principal founder of many years ago.