Not everyone has access to weigh scales. Although you might have a farming neighbour who will lend you their scales. Remember to regularly feel your pigs to see how firm or flabby they are. Soft, flabby pigs are carrying fat. Fat is needed to baste the meat and add flavour but too much is not acceptable to most people.
Our butchery course in October will be about finishing and evaluating your pigs and getting the best from your carcase. See courses for more details.