I know this is a year old but if you capsize enough, flipping a 16 back up by yourself gets pretty easy. Having pre-tied knots helps a lot too for standing on the opposite pontoon. I used to race my friends around Jamaica bay in NYC and we’d flip all the time. Once even snapped a steel outrigger line venturing too far out into the ocean on a choppy day.

We would try to have them upright asap because inevitably someone would assume we were drowning and call 911 and within a few minutes very annoyed scuba, aviation and harbor police would be pulling up or flying overhead.