You can gate check the stroller. We have done this a hundred times.
When you get to your gate, let the attendant know you need to gate check your stroller. They will put a tag on it. You then take it all the way down the jetway to the plane. You leave it there outside the plane in an area off to the side. Make sure it has the tag on it and it is folded up. They will make sure it is stowed under the plane. When you get off, it will be there near the door of the plane when you exit. A couple of times, for whatever reason, the jetway was not cleared and the stroller did not make the plane but it would arrive on the next plane. Most of the time there is absolutely no problems. But be aware, they do not handle these with care, so be sure not to leave loose items in them. And occasionally they may get dirty or banged up a bit, so i would not take your best stroller.