Should some trails be for bikes only and other trails for people on foot?  Or should there be rules on which direction bikers, hikers, runners and equestrians move?  Or should there be certain days of the week for certain uses?  Maybe not sharing is caring?  Increasingly across the Colorado Front Range’s increasingly complicated recreation landscape, these are questions being asked.  They are questions currently being asked in Boulder County, where commissioners have directed Parks and Open Space staff to explore the concept of “alternating use.” That’s been the buzz phrase of open houses and an ongoing survey gauging interest in designating certain days for certain uses — “instead of having all activities allowed at the same time,” an informational webpage explains .  “The Boulder County Commissioners are interested in whether trying alternating use could improve safety and enhance the visitor experience,” the webpage continues, explaining a potential pilot program to collect…