Not too much of a Fungi observer but did notice a recent thread that has a sidebar relating to disturbing mushrooms for the purpose of better identification by looking at the underside. Some are concerned about the next person to come along will not have the same viewing enjoyment.
Thought that possibly this hack would help plus have you carrying an emergency signalling mirror :)
Chopsticks (see earlier hack), elastic (see earlier hack), compact mirror
It was raining so I did not spend too much time looking for mushrooms but thought you would get the idea here.