Mole Ploughing

I do it after slurry just to give the moles as long as possible to set before machinery or cattle go back into the field.

Do you find it leaves the ground very rough. I have a single leg subsoiler and ya would need pull the roller or dive along it with wheel to help smoothen it out.

Would anyone like to advise on drainage. Picture is of a test hole to see what we are dealing with. All currently dry and looks ok but in wet weather is not OK. The field had a lot of fill brought in 20 years ago and is draining very poorly. In wet periods it is totally water logged. In 2017 I put a couple of drains in, pipe and stone, water is coming out of them but not enough as the whole area even a couple of feet away from the drain would have water sitting on top of the ground for long period. When those drains were done, the top was dry, the digger found water straight away shallow, then dry and for a test dug deep and found water again a bit over 2 meters down.

In 2018 came to the conclusion that there was a pan there so got a man with a ripper kind of thing to pull it through the ground. It didn't work, it is as wet as ever. Maybe it didn't go deep enough or maybe it's not the right machine. What do ye who have experience with drainage think?