Daiquiri Slush

2 cups sugar
1 cup hot water
1 large can unsweetened pineapple juice
2 cups vodka
1/2 cup dry gin
1/2 cup light rum
2 cups cold water
3 small cans frozen lime-ade
48 oz 7-Up

Dissolve sugar in hot water. Mix the pineapple juice, vodka, gin, rum, water, and lime-ade with the sugar water. Freeze in a large container.
Fill each glass 3/4 full with slush and then add cold 7-up and mix a little.