at age 66 myself, while the lifesling is a nice product, it won't do the job by itself on most small sailboats, which have limited crew, also made up of older people like me.
In my 19 foot sailboat, things have to be ready to go, and the person needs to come out very very quickly.
To get them out quickly in 55 degree water(where I sail in Northern Maine), I need two things that lifesling does not provide:
1. The ability to get to the person very very quickly
2. The ability to get them out of the water easily.
For number 1, you need very quick motor power(because they will not fall overboard in a gentle calm sea), and for that there is only one thing that will work: an already mounted Torqeedo Electric OB. You roller furl the jib, and let out the main, and reach back and put the Torqeedo into the water, turn it to WOT, and head back. You can do this in maybe 40 seconds max. This part of the option will cost you $1900US. Starting your OB, takes too long---you need to simply turn a switch and move right away.
For the second option, you need three parts:
a. You need to be trailing a knotted floating poly prop line on the side of the boat that does not have the Torqeedo mounted. It has to be poly prop because it has to be floating. If you are not trailing it, then you should have it in the cockpit to toss out. A loop at the end allowing the POB to put it over themselves if possible would help.
b. Everyone on board should have a harness over their PFD(needless to say, no one who sails with me does not have a PFD on at all times). This will cost about $75 per person on board.
c. When you get to them, you need to get them on board immediately. They will weigh in at over 250 lb with wet water. Up here, many people die while attached to the boat, but the people who are in it simply cannot lift them on-board. Small sailboats don't have winches and available lines. So this means that you have to attach a winch come along in a permanent attachment to the mast, so that you can drag the person up the side of the boat to the gunwale. This item will probably cost you about $200US to set up. You hook the winch come-along hook to their harness.
Then you will need a sleeping bag, or a DC operated electric blanket with a space blanket to get them warm while you head to the closest dock, which where I sail could be 3 or four miles away. (http://michaelaaronsonmd.com:8080/ac...ow-voltage.htm
) You will of course need a big battery on board, hopefully you have at least a 75 GEL Cell.
To deal with this takes more planning than most people are willing to do. And it takes training for everyone, and it takes tethers for everyone. 99.44% of boaters won't do this. Heck more than 50% won't even wear a PFD. You should hear the grumbling I do when I tell them they have to put one on to ride in my boat.
Do I have all this? Most of it, except for the tethers and the electric blanket, I have. But none of it is set up. Maybe next year.