So here is what I did to repair the lines. There is metal pipe in the ground from that manifold that has the poly attached with hose clamps. I was a little concerned about that but after looking under the house I see every connection of the poly pipe to metal fittings is done the same way so, I guess there isn't any use in worrying about that one connection. There was a split in the poly pipe under all that tape so I have a 100 foot roll of it and will probably try to redo and sort all this out this summer. At least I got the worst of it taken care of for now. Thanks to everyone for the help!