I have a new holland ls180 and I need to dump and spread gravel on a roughed in road. Length is approx 500 ft. and I have calculated the grade to run between 22 and 24%. Gravel is at the bottom and I will need to haul up in skid steer, dump in the middle of hill then back drag down to spread. Can I do this safely at these grades? I know I am pushing it but wanting to know if anyone else has done this on this steep of a grade.