The two biggest reasons to go to the North Shore--Matsumoto's Shave Ice and big waves. Waimea shorebreak (shown above) and Pipeline were going off!
And don't you dare call it a snow cone. Snow cones are the crunchy anemic treats you get from the creepy ice cream truck. Shave ice is powdery and soft and drenched with the flavor syrup of your choice. My choice is always something tropical like lichi and lilikoi. Matsumoto's does shave ice right as evidenced by the line that usually winds out the door and around the building.
Spend the extra 25 cents and get the cone holder unless you don't mind sticky fingers. For the adventurous and/or truly local, get the azuki beans and ice cream in the bottom of your cone.
There is a saying in Hawaii--"Lucky we live Hawaii." Yes, indeed.