Click on Day Sailer Association up there in the box at the top of the home page, then on Handbook, then on Part 3: Specifications and Measurement.
There's no separate handicap within the class for spinnaker or not, nearly as I can tell.
But of course I didn't look that closely because I'm never going to race. Never? Well, hardly ever.
![Smile :)](./images/smilies/icon_smile.gif)