If you don't want to miss a good run. 2 days after a good rain...where? take your pick....every trib will have 'em running. If you're able to make it...there's no guarantee you will catch one. Plan thoroughly if you're driving 2-3 hours from where you are. One hint...if this forum has very low activity...guess where everyone is? My son goes to school 1 minute walk from a trib...everytime he sees cars on the ditch...that's what's up.
Multitasking! He can learn and keep an eye out for cars on the ditch from his classroom window!