I have two boys that go with me about every time I hunt unless its before work during the weekdays. 11 and 9 years old now and . We got out of the blind for good year before last and only use it if its raining now. We have blown several hunts for sure but its all part of learning. Both them learning and me learning how to be a guide rather than a solo hunter. The hunts where we have killed birds have been way more action packed than sitting in a blind all day. I try to find a set up with a big blow down or big trees we can get our backs against. I too try to have them facing two different directions to some degree. One facing 10 and 2 or something along those lines. The stick up blinds are handy to help hide squirmy feet, etc. I also have some mesh tree stand netting that I will keep in my vest. I pull it out and throw it over our feet when I can if we are sitting all together.
One of the things I've messed up on a few times is having them sitting too low. A bird will come in and I can see it fine to kill it but they were too low to be able to get on him. Had that happen a few times. May try a turkey seat so they are sitting up a little higher this year. If you dont have one for them, may be a good option.