Hi can anyone advise whats the best polish for a black punto. We've got turtle polish but it seems to shine in patches and stay dull in some places. My husband doesn't polish his car and only does the roof of mine as I cant really reach much of the roof and he gets that part nice and shiny but I can be rubbing for ages and never get the outcome I'm totally happy with. I keep changing my dusters and let the polish stay on the car for different amounts of time but cant seem to find the balance to get a good shine. Any ideas? Thanks xx