You might want to try an owl hooter or some other locator call at first light to try to shock a gobble out of them. I usually don't put the birds to bed at night, but only because from hunting our place as much as I have I basically know where they are going to be anyways. If you are having trouble locating where they roost see if you can find out their usual route when they fly down. Most of the time you can pattern them pretty good. For example where I hunt there was this group of birds that would not make a sound on the roost, but by 830-900 they would be in the middle of this huge field gobbling their brains out. So instead of trying to get them off the roost, try to beat them to the field and wait for them to come to you. As for the roosting site you found in November, there is no way to tell if they will be there in the spring, but turkey are creatures of habit so it is definately a possibility. I would certainly scout there. Look for an area with some nice tall trees, with lots of feathers and dropping around them, good luck!