Wha' SUP?

With just three weeks to go until our Sayulita vacation, my husband seems to think he's going to learn the fine art of the SUP (Stand-Up Paddleboard) while we're down there. True, he's in the best shape of the last several years, and they say "anyone can learn to SUP," (anyone? really, people?) but I've got a few concerns:  1) Nobody seems to wear a lifejacket when they're SUP'ping;  2) I can't find a single photo of an almost 60-year-old doing the SUP...

and 3) That he'll insist I join him for a lesson.
There's got to be a way out of this, and I've got three weeks to come up with one.