If you read Mike McCoy's excellent Cycling the Great Divide (available from Adventure Cycling online. Get it. You need to read this book before you do the Divide!) on page 22 says "...a fully suspended bike pulling a single-wheel trailer designed for off-road use, such as the B.O.B., appears well on it's way to becoming the official rig of choice for the Great Divide rider." I have not done the GDR yet, but do a lot of off-road touring, with both a BOB or panniers, but because of the panniers and rack, I ride a hard-tail Trek 930SHX. The advantage of the BOB over panniers: They don't bounce off on rough descents, you can carry a bit more stuff, and it works with full suspension. Advantages of panniers: Shorter turning radius, you don't always have to get off the bike to pull something out of your pack, and you can do killer "wheelies" really easily! ;-) Essentialy, I use the BOB for anything over a weekend long, and I use the panniers for one or two night trips.
The BoB or Yakima type trailer is much better suited to mountain biking than the two-wheel rigs like the Burley. It is the same width as the bike, and follows where the bike goes. I can see a two-wheeler having problems on single-track. So far I have not had any problems in any terrain with the BOB.
This message was edited by Trailpatrol on 2-26-04 @ 8:59 AM