Yeah right.
I've seen it done many times too as I used to work for BT...
And it often hits a stone...
And it often starts off in a different direction...
Including UP.
Recently I had to replace a water main and the route went at right angle under a wall, flower border and path. The trench was opened wider beside the path so I could get in to hammer a scaff tube through the 1500mm of heavy clay below the wall footings. Easy? Nah...
