I don't go offroad much at all on the Strom. I have followed a few old abandoned rail lines since they are usually hardpacked and somewhat smooth. Most of the time they have "no motorized vehicles" posted but I ignore them when out in the sticks.
I followed one that heads north from Shelbourne for a few miles, I guess you could try that out.
After riding the Strom around on some gravel roads and a few hard packed trails I find myself looking for more street orientated tires.......or maybe I'll buy a BMW F800GS next year and then do a bit more exploring.
'07 KLX250S - Road
'00 CBR600F4 - Track
"The World is a book, and those who do not travel read only a page" - St. Augustine