Please remember you are on an open forum on the internet. You should not believe everything someone says, even if it is just strange. If the person says he has a hole in his urethra, where is the photo? I'm sure that would be interesting. And you can't swim with a catheter in, especially not an open one. After 3ft deep of water the water pressure would force water into your bladder.
And On a note someone else asked about using 2 12fr catheters to just keep the bladder sphincters open... yes that works, but it is fairly uncomfortable. You have to have 2 balloons, and they press on each other and push the ends/tips of the catheters out so they rub/scrap the bladder wall. I tried 9french, and it was interesting as I leaked continuously, I had constant spasms and aching pain, then blood when I finally removed them after about 2 hours. Usually I wear my Holey foley for 3-5 days and have actually forgot it was in and got dressed without the diaper. But it does remind you after about 20 minutes,,,LOL
But don't believe everything you read on here or anyplace on the internet without solid, reproducible proof!