IMU has three components: operating expenses, anticipated markdowns and desired profit. Operating expenses -- utilities, payroll, supplies, insurance and other costs such as marketing and shrinkage, or loss from theft or damage -- make up your overhead and are expressed as a percent of sales.
See the following table for the approximate number of crabs per bushel: Generally speaking, a bushel of Number Ones will hold 60 - 70 crabs depending on how big the crabs are at that time of year. If there are 60 - 70 crabs, they will feed about 10 - 12 people depending upon what else is on the menu.
You can leave the crabs in the bushel baskets with wet burlap on top of the baskets. If you don't have a burlap sack on hand, many crabbers use wet newspaper to keep the crabs cool. You want to maintain a dark, cool and moist environment to keep the crabs alive. Just keep in mind that the crabs need air too.