NOt sure about Lizard Head, I've never seen tracks in there. The whole Telluride area is anti-sledding, imo.
But Ophir, Red MTn and Silverthorne are pretty good. Some of the deepest and steepest in the state. Regarding Ophir, i've ridin in there alone and its creepy. I pretty sure its ok to unload at the elect substation on west side of the road. And head west towards Ophir pass. but it travels thru the a gulch that if it slides, your dead..... Once again, i never see anyone riding in there, but its been done by me and others. Contact the Silverton sled club for exact info, and pls be careful.
Molas looks way cool, stairstep terrain. South of Molas get very little snow as you head to Durango. Enjoy
Ray