Puzzle #163: Turning Fences

The LMI Marathon puzzle that was solved during the competition was actually the second version. In the first version I put in some stuff that came naturally to me for this genre, but stumped the test solvers. That's why there was an easier second version, which still took a relatively long time for the test solvers. That was why I added the Tutorial on my blog, just so people would realise the basics that I had figured out when designing these puzzles.
Here is the first puzzle I wrote. There are a few similarities to the second puzzle as I kept the bits that were solved quickly in the first test solve in the puzzle. It has the same layout as the second puzzle. For those who hadn't figured out the layout, the givens are in the shape of 25 letters that spell out TURNING FENCES LMI MARATHON 3 in an inward clockwise spiral. The 3 shape is made up completely of 3's.

Enjoy, but take some time to get through it logically.

Rules for Turning Fences

Click to enlarge