I'm pretty sure all the trails are closed per the moultonboro smc website. Saturday's storm is supposed to skirt us to the south with no snow for the lake. Trying to ride the trails with too little snow is bad for your snowmobiles and bad for the trails.
That being said, we have some Club leadership on this board who I'm sure will pipe up and correct me if I'm wrong....
http://moultonborosmc.org/category/trail-conditions/
From the website home page:
Club Info:
Update: January 18th. We received another couple inches of snow followed by a warm up and a fair amount of rain. We need 3- 4 inches of snow and we will open the gates. Riding is just beginning in the north country but until we receive another snowfall it’s a waiting game here in Moultonboro. Everyone PLEASE do your snow dances!