i did a writeup on the 2003 "Six Days of Michigan" trail ride, you can read the whole saga w/pics here:
http://www.thumpertalk.com/forum/showflat.php?Cat=&Board=UBB10&Number=650082
just wanted to follow up and let ya'all know that i just posted a whole bunch of trail pics from this year's SDM ride -- see the tail end of the link above. also, midway down the thread is a map of the drummond island trails, in case you are interested in riding it.