Interesting thread!
This problem has been around since the early 90's. I started riding in the Three lakes, Eagle River area, back then. Its always been a problem, people cutting corners(in the day!!!), not respecting other riders, parking/stopping sleds at a corner, drinking and riding, etc. I used to race snowmobiles professionally, so I know what driving to fast for conditions is. I have done it, everyone has done it. When I first noticed it was an issue, we started riding at night, late at night, from 1:00am - to 6:00am. We would leave Chicago at 4:30pm on a Friday, head up to Wisconsin, get up to Eagle River at 11:30pm, get ready and hit the trail. Sleep till 3:30pm or so on Sat., play on the lakes till, nightfall, than have at it again. Then we slowly started to migrate to the UP area, do to all the traffic on the Wisconsin trails, the less traffic, the less the risk. I don't get up to sled much anymore, but the times I have, my perception of danger, has not changed. It's like riding a Motorcycle, its dangerous. Why? 90% not because of you, its everyone else!! You have to be a defensive driver on a Motorcycle and or a Snowmobile.