The advantage of the Madison River is that there are two sections that do not allow fishing from drift boats. So a walk and wade angler is at no disadvantage to drifters. The top section from Hebgen Lake to Quake Lake and from Quake to Lyon Bridge is wade only fishing. The bottom section from Ennis to Ennis Lake is also wade only fishing. With a float tube, or by shore wading, you can fish either Hebgen or Quake, or the take the $3 Bridge Road to Wade and Cliff lakes.
http://www.anglerguide.com/montana/access089.html
http://www.anglerguide.com/articles/235.html
If you want to try a small creek, Fish Beaver Creek along Beaver Creek Road off of US 287. Be very careful you don't get stuck if you try it by car.
http://g.co/maps/u7jue
Regards,
Silver
"Discovery consists of seeing what everybody has seen and thinking what nobody has thought"..........Szent-Gyorgy