Great Pumplins: When growing giant pumplins for competitions, growers need to keep track of the weights of the pumplins while they are growing. It is difficult to weigh a large pumpkin before it is harvested, so a method has been developed for estimating the weight. The grower measures around the pumpkin both horizontally and vertically, then adds the results. This is called the OIT (over the top) measurement and is used to predict the weight of the pumplin. Following are the orT measurements and actual weights of the 10 largest pumpkins entered into official competitions in a recent year..