J.M.
My 5.25 year old son only recently stopped wearing goodnites. He still wets his bed about once every two weeks (about the same frequency as his 2 1/2 year old sister).
He uses the bathroom right before bed and we limit drinks after 7 (bedtime 8:30pm) - though it does not always make a difference.
He is a very deep sleeper and it has taken time. We have also been told that taller/bigger boys seem to wet their beds until later ages.
The "chucks" idea with the double sheet is great! Thanks.