Communicate. No ands ifs or buts

If it's flooding so fast "you don't have time to communicate" you better be communicating it! If it's slow enough you think you can control it, tell someone, schedule regular check-in times, so if you loose electrics people know to send someone looking. If the Coastguard/Support know what's up their response will be much quicker and much more efficient when you need it. Don't wait until you finally decide that maybe you should have made that call 5 minutes ago…