Information on what to write, topics, format, and where to send letters can be found in this thread.
http://www.azvirtualjeepclub.com/showthread.php?t=3410&page=7
Ladies and gentlemen this is our final opportunity. This is a now or never, we need letters. Write to all your friends in all off road clubs, don't let them do form letters, help them write their own, but get it done. Of all the trails in Arizona this seems to have the most history and love from off road users, if we are not willing to fight for this one what trail are we willing to stand up and save? Please help this be the start of a new era, one where OHV is willing to stand up side by side and work to maintain keeping our trails open.
The time to stand is now.