We were in a great spot near the end of this day. A road that cuts through the federal park land opens for a few hours each day. Due to the current government shutdown the gate opened early, and we were driving right by.
No bouncing boat !

This part of a herd was grazing and slowly working their way through the marsh. The ponies are protected on this federal land, even a small fence line goes the length of the marsh to keep them from wandering where people might be. A large part of the island is federal land with no access.