I found a raft of 150 Ring-necked Ducks in a reservoir where the only viewing area was along the side of a busy highway with no parking. I found another reservoir that was completely off limits but a neighbor with a view of the water allowed me to take a look from their yard. There was over 200 Ruddy Ducks resting in the water like they didn't have a care in the world!
It was disappointing that I couldn't really share the information because there was no legal place for birders to view them. I don't want to encourage other birders to break no trespassing laws and I'm sure the ducks don't mind having places to go where no one disturbs them.