I'd think Kenny's rig could be adapted: maybe an old car wheel at the top to reel the poly over it and down to a more-curved-than-kenny's gizmo at the bottom. Make some sort of mounting above and behind the tire wheel to mount the coil of poly pipe.
I've seen people pull poly plus wire over an old car wheel to pull the submerged well pumps out of the ground. The car wheel keeps the pipe from crimping coming up and out parallel to the ground.
If you don't have far to go, buy yourself a trenching (skinny, about 30 degree bend) shovel to dig the trench and lay the poly into it. This is what I used at Baton Rouge. Here, I buried some of it this way, just under the grass. Mostly, I just laid the poly on top the ground. You could do this in Canada if you just blew the pipe empty with air at the end of the season, OR if it runs downhill like my 1100' of poly, it'll drain by gravity. Poly is pretty tough. It'll stand up to the tractor running over it. Heck, I hung some of it down near my garden with my brush hog and didn't hurt it (blade didn't hit it).
Ralph