I was wanting to do the same thing for some water lines for our market garden. I am tired of dragging hoses and pipes around and having to move them to mow.
I am planning on only to use this during the frost free season and blow out the lines during the winter.
I have this one row ripper, that I was going to take off the shank, reverse it to have a smooth side out and then either attach some sort of smooth bent pipe to place the pipe in the ground or find something to pull the pipe under the ground with.
It does a good job ripping the garden.
I also have 4 of these curved tines that I use as a cultivator two work in soil amendments and weed. I could use one of these with ripper point on it and a swooping back pipe.
Any ideas, thoughts?