Klaus,
try this once. Jump into the sea upwind of a safe landing place like a beach with no big surf and well within swimming range, or swim some small distance out. Try using your phone or a replica with real buttons while lying in the chop or waves. Try to have a meaningful conversation of about 2 minutes without getting the phone soaked. Remember that you are not likely to be separated from your boat unless there is some wind, so try it a summer day with some wind and chop. Unless you have some really special precautions, I would save the phone in its waterproof package until I was back on land.
I have helped right Tornados who have gone over with big holes in their masts. We towed them sideways until the mast was accesible from the boat and then had boat no. 2 grab the mast and let it drain a bit. Then we towed them sideways and 'threw' the stick upwards to get it started. Once the centerboards got some grip they came up, but crew had to be really alert and hang on to the mainbeam to stop it from going over the other way. The mast is
really heavy when it is full of water after a turtle!
1. Don't single hand a boat you can't right yourself.
2. Don't rely on others to help you in case you need it. I was very dissappointed at all the other boats out there that just sailed around him without offering any assistance. This would have been a non-issue if someone had helped him right prior to him going turtle.
3. The boat is not worth your life. When it comes down to it, get out of trouble and worry about your boat later. It can be replaced.
Totally agree