Just as with learning most everything else, I failed miserably at swimming lessons when I was 5 or 6. But also just as with most every other learned skill, I taught myself to swim just fine, and I'm a good swimmer. It didn't make sense to me how the swim teacher was explaining things, and it still doesn't when I think back 35+ years. I guess I never had a real fear of water, and that's probably because I grew up near the ocean, and we went to the beach nearly every weekend during summer, so I was exposed to the ocean as a toddler. I've been caught in rip tides, and it's no big deal, but for some people who don't know how to ride it out, they panic and die. It's so simple what to do, and anyone can do it; probably even if they're severely handicapped physically.
The fact is, that you will not sink in a pool or the ocean. You need to understand and FEEL how to position your body so that it's not any effort to keep your nose above the water. If you're a little heavy, it's even easier, as body fat is much lighter than water. Your head is the heaviest part, so you just need to put the rest of your body below the water line, and that in turn forces your face up & out. If you struggle and thrash, you'll inhale water, and drown.
In a riptide, let it pull you out, as the best champion swimmer in the world CANNOT outswim a riptide! It's not going to pull you miles out; just a few dozen feet at most. Once out, and even as it's pulling you out, you just have to gently swim parallel to the coastline, about EIGHT FEET, and you're out of the riptide, and will be swept right back onto the beach with virtually no effort. Just remember to swim one way or the other, but not TOWARD the beach. Remember it doesn't matter how fast the tide is pulling you away from the beach. If you're paddling in a direction 90 degrees to the riptide, you will be moving in two directions at the same time, which is what you want.
Charles