Crush and run is the worst possible choice. It is a bunch of fine stuff mixed with some 3-4 railroad rock. The Crush will disappear into the ground and do nothing and the large rock will be annoying and not enough.
If it is real soft ground, get a load of rail road rock, 3-4 stone, dumped and have someone with a steer/skid spread it and work it into the ground as a base. Then have a load of 5-7 stone delivered and spread that on top, and it will stay there and not disappear.
An alternative to that is to find some Marston matting, aka PSP or Perforated Steel Planking, and make a pad from that. Each strip is 13 inches wide by 10 ft long and weighs 66 lbs.
Charles
