I hope the video was helpful.  I am not going to re-hash what I talked about in the narration, however I would like to take a look at how long it took Iona to find each hide.  

She found the hides in (23,14,18,6,55,13, and 23 seconds).  This averages out to 22 seconds a hide!  Way quicker than I would have estimated.   So if she has not found a hide in a minute or two,  then there is a good chance that she has found them all.