Bryan, I guess not very far. Maybe an hour cruise north from Katheren's. We've had launch ramp problems north of there in the fall - like the end of the ramp is above lake level...
We had reservations last year at the 909-erside but the rest of the party backed out so we went to Havasu instead. The cheap rooms are cool, and Mojave's a nice change of pace, but Havasu's still magic to us.
Have a blast, and make sure you get some pics posted.