Yes, go about a mile in on the left, some very large open sites. Do not drive down any of the spur roads, or even beyond that first mile, it’s a very long way to any other sites or turn-arounds.
You definitely won't have an issue with a 19' travel trailer, but I haven't seen any pull through sites. This may help you - https://youtu.be/QFOfk0Av7N4
Definitely! No problems getting around. Roads are pretty nice and there are so many great spots that fit all kinds of sizes. We are a 25 ft not including our tow vehicle and it was one of the easiest places we stayed at on that trip.
We had a 26’ trailer and no issues but we backed into our spot. Like SC below, we were only a mile or so in on a spur road there. Plenty of spots and wide open.