A: I personally would not do that due to the 1st and 2nd major switchback. My question for you would be why? You can't camp down there unless you plan on running the White Rim Trail and if that is what you plan on doing, perhaps take Potash Road in https://www.trailsoffroad.com/trails/1228-potash-road-ut . There is plenty of parking locations on Island of the Sky Road and 313 to leave your trailer if you just want to do the road. Remember Shafer Road can close quickly due to rain, it's steep and those switchbacks are not hard, but they are tight
–Todd (09/09/2018)