The length of time needed to boil jumbo shrimp depends on the size and the cooking method used.

One common method is to bring a pot of water to a boil and then add the shrimp. Jumbo shrimp should be boiled for about 3-5 minutes or until they turn pink and opaque. The exact cooking time will depend on the size of the shrimp, so it is important to keep an eye on them as they cook.

Another method is to simmer the shrimp in a seasoned broth or stock. This method can take slightly longer, around 5-7 minutes for jumbo shrimp. Again, the cooking time will depend on the size of the shrimp and the heat of the stove.

In either case, it is important not to overcook the shrimp, as this can make them tough and rubbery. When the shrimp are fully cooked, they should be removed from the heat immediately and drained before serving.