My 27 month old decided to potty train two weeks ago and is doing great. He has been accident free, including at school and in public and I want to keep up the momentum. The only thing I can't figure out is how to get the kid to use public potties. He will use the Potette in a stall without a problem, but there's absolutely no way he will sit on a seat. Part of it is he has a tiny butt (like fits in 12 month shorts small) and doesn't fit on the seat. Even if I hold him he's unstable and is afraid of falling in. I'm happy continuing with the Potette, but any suggestions for getting him to realize it's okay to use the potty?