go down to the bike shop and get the widest seat you can. When you are spinning you are totally upright and it kind of jamms the seat in your bumm Don't know how it works for you but the cheapest seats we have are at Target, Kmart or Walmart. You need a wide saddle to try and do any windtrainer riding. Reason is that when your arm is in the immobilizer you cant put ANY weight on it..zero. During the first 3 weeks if you do it may re-break before it fuses fully. Also be careful about doing lots of full sit up stuff, sleep on an angle, with yourself propped up a bit.
* most important thing about broken collar bones!!! If you need to go to the bathroom go often and early. Don't wear a belt no matter what. No Levi 501's with button fly. no button fly anything. When you need to go your brain forgets that one of your hands is useless and then getting your pants down is an emergency. Just walk around with no pants if you can. Just kidding.
One of the worst ones is when you are totally calm, reading or watching TV. You go to reach for the remote, or the doorbell rings. Just the little body contraction will make this lightning bolt of pain shoot thru your body. For such a tiny, useless bone this thing is a real pain.in every way. Don't worry in 6 weeks you are good as new.In 12 the area were the bone fuses is stronger than original with all the build up where the break was. If they offer to pin it let them. 4 or 8 little pimple looking scars and it makes the recovery better. When I had a double I had this steel rod below my neck looked very formula one.Only lasted for 4 weeks