"Drop another gear."
Uhg.. wish it was that simple. When i hit those hills and wet spots I'm happy if i can maintain 3mph, 8mph is a dream to me. I prefer to run all of my heavy tillage (9 shank modified Bush Hog 1560 mulching chisel plow with full coverage sweeps and heavy straight points, JD 425 offset disks on 23" concave [32]disks), 5mph and no more then 6mph. These are the only trailing primary tillage equipment I use. All my other heavy tillage equipment is 3pth and no problems with them.