Does anyone use mini-trenchers for their residential irrigation installations? I've wondered if they would be easier to use than a traditional trencher and if they can trench up close to house foundations, walks and drives (to get away from having to T-in so much). I want ease of use and one that trenches at least 10 inches deep. I've seen the various models online and wonder if anyone owns one and how they like it. Thanks. If you own one does it also trench well in hard or wet soil? Thanks for the input.