Mike
Contributor
"Senor, there is so much of you that you need your own DM"
Not sure if there is any way of sugarcoating that. It's easy to lie about a current to a newbie, but how do you tell them you're charging double because they're so fat? I wonder if Scuba Du has any ex-Southwest flight attendants as DMs?
LOL.
To answer your question -
Probably the same way all Mexican dive masters discretely sugar coat and avoid confrontation, probably no differently then how they make up a plausible excuse about current or viz or something else stopping them from going to a dive site that they don't believe the diver is experienced enough to do after watching them dive a couple of times.
"Your last dives were 2 years ago? maybe a private dive master would be a good idea..."
"You are diving with your wife and she's nervous about diving, maybe a private dive master would be a good idea to dive with you both..."
"You like taking a camera... maybe a private dive master would be a good idea.. Pedro is excellent at finding things.. what would you like to see..."