Is it time to regulate ATVs clogging Alaska trails during hunting season? Since 2008, more than 60 percent of Alaska hunters use four-wheelers. My observation is that 60 percent is low. When caribou season began in the Denali Highway area this season, it seemed like every pickup and motorhome was being pushed by a trailer full of side-by-sides, six-wheelers and camouflaged four-wheelers.September 30, 2014