i hate irrigation!!we grow 20acres of carrots on our other farm, the kit belongs to the owner not to us, he sold the good stuff and kept the worst ones, it took 3 of us a week to get it to run properly and during the whole season there was only one day when it didn't go wrong! As for clay we have a 600 acre unit that a 170hp tractor and 5 furrow plough at 14inch furrows struggles to plough at times, some of the worst land in that area of Norfolk, in fact the driver ripped the headstock on the plough in half two weeks ago, really tough going!!