I was wanting to hear some opinions on installations methods of horizontal loops. I have seen trenchers used and backhoes. I have seen a trencher used, 2 pipes laid in and a return bend fused on the end and buried. I have also seen 3' trenches dug with a backhoe and multiple loops installed and back-filled. The trencher method seems to be the least messy and maybe easier to use with a high water table if the pipe is placed in the trench as it is dug. Opinions??? What is the overall opinion here on directional boring? Is the ground contact with the HDPE adequate for the system to run correctly? Thanks!!!