Being going to SD for the last 5 years. Staying in Super8 in Chamberlain for about $65 a night with advanced reservation. Beautiful views of the river right from the windows and plenty of WPA,GPA grounds within hour or so drive. As someone said, all the maps can be downloaded to GPS and you can just drive from spot to spot. My only problem is that now even in Nov is pretty warm. Last year I had butterflies and bees flying around ....watching dog and watering a must ..