Ok Tim,
Just for fun, I did a little math.
If you worked doing nothing but pollinating, eight hours a day, for seven days.. that is 8 x 60 = 480 minutes x 7 days = 3360 minutes.
3360/5000 = one plant every 40 seconds..... In that time you have to pollinate and mark each plant, Assuming you have the pollen already in your hand.....and your database done. I don't think I could move that fast