When you need a bucket-full of clear seawater, make sure you have a longish lanyard and tie it to the boat. The pull can be considerable at five knots if you achieve the result you are looking for. To secure a full fill every time, gently throw the bucket rim-down into the sea. Too many people just drop it in and hope for the best. And buy a quality bucket from the builder’s merchant. Lightweight plastic rubbish is fit only for the kitchen. Go for heavy rubber. A good bucket is a friend for life.