There is a group of 6 of us going up there Thursday. One of the guys parents were up there last week through the weekend and left yesterday and they stated that they held up very well. They are a little thin in towns and on road trails but in the woods, they are still in good shape. I imagine you will run into a few spots that aren't the best but from all indications it seems they held up pretty well. It looks like they will only get a few inches between now and the weekend but every little bit helps.
Also the trail report from snowtracks website for Mercer is below....
Trail Report For: Mercer
Reported By: jim / dear lodge
Date of Report: 02/21/2016
Trail Conditions: Fair
Snow Cover: 30
Area Report: The trails held up pretty good in the warm temps this weekend, once groomed they should be in good or very good condition. If the forecast holds true, Thursday thru Tuesday could be excellent. will get back to you Tuesday morning after I talk to the groomers.
THANK YOU FOR ALL YOUR SUPPORT
Jim /
stay@flambeaulodging.com
Thanks.