Downwinder tips for newbies.
Declaration. I haven't done a downwinder for a couple of years. We did several a few years ago on 11-12' boards in winds up to 50 knots then didn't follow up with longer boards and car shuffles etc. Feel free to ignore anything I say.
Rule 1. Plan a series of exit points all along your route. Paddle from exit point to exit point. Never let yourself go chasing runners out to sea and get away from your exit points. If the wind is pushing you away from shore you must do the harder work to get towards shore early. If you leave it late then it will be too late.
Rule 2. Pace yourself. Just cruise along. Take rest breaks. Only paddle hard in short bursts. In 40-50 knots the difference in speed between paddling and not paddling is barely 2 kph. Don't try to chase the good guys. They are ahead because they are catching runners and that is an acquired skill. You won't do it by paddling your guts out. By pacing yourself you extend your time on the water and you improve your skills acquisition. Do it easy. Slip through the water like a ninja.
Rule 3. Buddy up with someone who will not mind waiting for you if you are slow.
A few statistics. Your paddling speed is about 8 kph. Your speed just sitting on the board getting blown along is 6 kph. (Try holding your paddle up as a sail. It's fun). On a runner you quickly accelerate to 15 kph.
The other thing is to wear a decent wetsuit. If you get stuck out on your board (or without your board

) then your wetsuit will keep you alive until you can be rescued or make it to shore somewhere else.