I have hunted Unit75 3rd season the last two years. The first year, I saw probably a dozen mature bucks in the 150-170" range, on public land. I shot a four point on the last day. This buck was barely a four point. I certainly saw bigger bucks than him during the hunt. Last year, I saw one buck on public land. I saw dozens of good bucks on private land around Bayfield. Again, I shot a four point on private land on the last day. If I had not had the opportunity to hunt private land on the last day, I probably would have went fishing instead. I personally would not burn two points on a Unit75 4th season unless I have access to private land. During the 4th season, I believe most of the deer will be down low on the private land. If I ever put in for Unit 75 again, it will be the 2nd season when the deer are mostly still up on the National Forest and not down on private. There is some low BLM country, but it is usually packed with and army of orange-clad hunters. I know nothing about Unit 70. Hope this helps