Add a tsp. of salt to 3 quarts of water and bring to a rapid boil. Throw in the macaroni and turn down the heat so it doesn't bubble over. Cook 8 min until tender, stirring occasionally. Avoid overcooking so it won't stick together. Drain thoroughly in a colander and chill in the fridge. When it's, like, cool, dump the macaroni into a big bowl.
Chop the celery and onion and add it. Drain the seafood and add. Put in two good dollops of mayonnaise, but don't overdo it. Salt and pepper to taste.
Mix is all up and keep in the fridge till dinnertime. Serve with lettuce and wedges of tomato. You can dust the top of the salad with a little paprika.