Bruff TG1 Trenchless drainage plough ideal for cost effective installation of land drainage and water pipes and other services comes with gravel/pipe box, leaves a nice tidy and narrow band of grave, best pulled with a winch crawler or your biggest tractor or 2,
hydraulics plumbed direct to tractor with spool valve on platform
I have one of these (yellow 1) that was converted available to hire as well look Here for video