i find with the glass polish, the longer you leave it on the eaiser it is too take off,
i wash mine every week, may leave it 2 weeks before i wash it but that rarely happens,
the wife hates my detailing addiction, i must have $1500 - $2000 worth of stuff, its forever growing too lol,
the big detail (4 times a year) takes me all day (8-9 hours) to do the stag if i polish, wax it, i must be sad, i find detailing one of the most relaxing things to do.