Wow!! Boy u sure got some question,lol. However they are all valid question. First question: birds fly off the roost when they can see the ground, if there is fog it may be a lil later. When it rains its about the same time. What u should do is put the birds to bed if u have the time and u dont have a far drive, meaning u find out where a tom or several toms are roosting, they gobble on the roost and u can hear them by using locater calls or just seeing them fly up in the tree. Ive had turkeys roost behind me when im in my deer in the last few minutes of day light. Once u find out what tree they are in or the area u think they are u need to sneak in there in the dark so they cant see u. Get about 50 to 75 yds away and set up your decoys. Start doing some soft tree yelps when the sky turns pink or wait till u hear some hens start doing them first or when the toms start gobbling. Then when it gets light do a fly down cackle, its like a loud series of yelps in row real fast. Then do some light calling, this is when the toms are trying to hook up with a hen and if he is alone he will come in, but dont call to much or sound too excited, because if your so excited he will think if the hen is that hot then she can come to me and he wont come in, hell just stand there and strut. To do a pur on a slate call all you do is find the sweet spot on your call and gently rub the stiker at an angle and make a purr, it take some practice but its east to do. If two birds come in and they are gobbling at each other u can defintley shoot one and your pa can take another one if no one move after the shot. Ive shot one tom and the other will mount the dead tom, thinkin he is mating with a hen, however u have to make a good clean kill where the turkey drops and doesnt take off flopping all over the place or worse get up and tries to run or fly away then the other tom will know something is wrong and he will fly away. If somene tells u turkeys dont fly when there scared, THERE WRONG! So practice your calling and get comfortable with all your gear and always wear a face mask and a hat to cover your eyes, they can see u blink. Let me know if this helps.

"ALWAYS LEAVE THE WOODS WITH SOMETHING"