What about the channel off of Mission Bay in SD, east of Fiesta Island. It has park along one side with a Hilton Resort at the end of it, Fiesta Island on the other, and scales to about a 5500' long straightaway on Google Maps. Very protected from the main bay.
We know that drag boats had became the biggest draw at Bayfest. We just need a drag race without the Unlimiteds and Offshore boats, or at least simultaneously, but with the protection of this channel.
http://maps.google.com/maps?client=...4&t=h&z=15