I have a Trek 7100 that I have been using primarily on paved roads with some gravel. It has stock 35mm tires. I have found some old logging roads which look interesting to explore. They are essentially flat but with lots of pot holes,debris, and small amounts of vegetation. Basically a mountain bike would eat them up, but I will be going slowly enough that I don't expect a particular problem with the Hybrid. Anyone with any comments or suggestions? Is this not suitable for a hybrid by definition?