1. Yes i use them
2. only when it is cold enough that my under armour liner gloves dont do enough w/ my muff.
3. i like the fact that they can keep my hands warm when i need to draw my bow...
4. i guess the #1 thing is that sometimes the material bunches up and doesnt stay even through out the bag ya know? also i dont like that sometimes if they are in spots you cant move them around to get more air they dont feel like they are workin
5. i like handwarmers to last a day. so i can use put them in muff in AM and if i come in and decide to go back out they are still warm working in the PM