ScubaSteve
Wow.....what a DB
Belated thanks for your responses. I've come to the conclusion that really we don't need a DM for safety's sake. But I think he (she) will be useful to get the most out of the dive, so we're going to retain the DM.
Not a bad decision to reach. As long as they know what you want to get from the dive and everybody agrees, you guys will have a blast.