I would strongly suggest that you get rid of the immediate confirmed on those that you mark. Why? the last 140 odd that I have marked come ujp as confirmed this can only mean that the frame has been viewed a number of times. this gives a negative feedback loop to the marker if after spending hours marking only to see that it has been done before. This could/would lead to many giving up. The greatest motivator of all is discovery / being the first. What is the solution? give each marker a number of first views or, as mentioned above, do away with the immediate feedback?
I have been marking since the beginning and with ice hunters.