Tidal predictions

Found this site to be useful. It has week by week predictions for most beaches and associated ports. When is the best time to find sea glass? My experience is that the more stones washed up the more sea glass will be too, and this is usually to be found when the tides are diminishing (neap tides).http://easytide.ukho.gov.uk/EASYTIDE/EasyTide/index.aspx