Dyyylan, there are lots of good reasons to wear one even for strong swimmers. Stuff happens that you may not anticipate, even here. The wind shifts direction, happens with most fronts that pass through, when thermals turn off too. Lets say you're doing a downwinder, your kite goes down, something breaks and you get washed offshore in the rip out of Boca Inlet around low tide. You injure yourself, pull a muscle, tendon, get skegged, line cut, bad Portuguese hit, if you get wrapped up in a good sized one it can mess you up or you just need to self-rescue, it is good to not have to work to keep yourself afloat as aggressively while you sort things out. I must have self-rescued 75 times or more since I have been kiting, it really helps and speeds things along. Say your lose your board in overpowered or underpowered conditions, it can happen even here particularly if winds are side shore. If you ride in other areas, the Keys, parts of Miami, getting blown out by an outgoing tide becomes even more possible. There are even more reasons than this particularly in hypothermic conditions, areas with strong rips, etc. etc.. Swimming miles isn't problem even towing gear, done it before. Despite that I've worn impact vests for many years, these days a Neil Pryde High Hook vest. In the early days I wore them mainly for impact protection and warmth but the minor flotation is always there as a convenience or if things really go south. You forget you have it on in minutes, so if you aren't aware it is even there, what is the harm? There are people that would likely still be here if they had worn a simple impact vest, it is worth thinking about carefully.